Londoner, now also Swiss lives in Coppet with Jill and Kobie the Cobberdog. Ex DuPont and Conoco. Also TMcL (before then KPMG London, Manchester and Bristol). FCA and ATII. BSC Physics - Bristol 1973. Ex-President of NGO Norlha (closed down). Likes dogs, mountains, prog rock, bikes, hikes, climbs, swims, skis (x-country - down and uphill), raquetttes. But joints are getting creaky.
A journey through a winter wonderland. La Givrine to Cabane Rochefort and La Genolière. 10Km and 300m denivellation.
Billed as a hike it became clear that this was going to be a snow-shoe affair, filling the first of Rob’s calendar for the 25/26 winter season.
Rob had still not recovered so I ended the hiking season with this fairly easy snow-shoe. It looked like the weather was going to be good and perhaps the snow too, but we were (at least I was) astonished at the 35cm or more of powder lying on the Jura top, while our gardens were still green. Ross had been pounding the powder for the past few days and posting photos so he knew about it.
Apologies were received from several, simply to record that they were missed, and they missed a good one. It was uplifting to hear from Larry but we were sorry to read that he is still in Canada struggling with some health issues. Get well soon Larry!
In the event 9 and a dog turned out at La Givrine (1207m). Nathan, Mervyn, PeterS, Mark, Mark, Stephen, David, Ross and me with Kobie. Conditions looked perfect with bright sun, cold, and no wind. I had booked a table at La Genolière for 12.30pm, but had to revise this by phone with a delay to 1.30pm – we were slowed by raquettes, age and deep snow and by the apèro stop.
Mervyn and Kobie – who found the snow depth troubling at times The author, David, Mark2rs, Nathan starting out Into the woods
We set off on the ski du fond piste but branched off on the snow-shoe trail to Les Pralies, followed by the Route de Combe Grasse
David enjoying the conditions, and his condition was good tooThe trees were loaded with snow – perhaps better than at Schilligers
This route was straightforward as a vehicle had passed by earlier. Stephen set a steady pace through Combe Grasse with Kobie following in his wake. Ross was pleased – this was a new route for him – and he seemed surprised as if he thought that he had traversed all the trails above La Givrine.
At 1271m exiting the forest into Combe Grasse.
The Combe itself is a depression which acts as a fridge, cold misty air hung in its bowl as we ploughed through the deep powder, aided only by a trail laid by four snow-shoers we could see ahead. I was lost in my thoughts, amazed to be out in such conditions – albeit we have been here before in similar…
Through the Frigid CombeCrystal fields on either side – magical conditionsMervyn pulling up from Combe GrasseStephen up ahead – he was trying to lose the 5 kg that he put on during his Antartic cruise.Looking back, Kobie right behind me
We turned sharp left at 1316m just before the right turn to Chalet Devant at the Fruitières de Nyon and then sharp right on up to the Cabane Rochefort 1385m.
Looking back towards the Barillette on the way up to Cabane RochefortBig views to Mt Blanc and the whole alpine chain
It was time to reward ourselves with some apèro at Cabane Rochefort where we found the seating in the shade still and cover in 30 cm of powder.
Stacks of snow at C RochefortA fine spot despite minimal seatingMervyn supplied a welcome bottle of chilled white wine. While we took in the view, over the F de Nyon, Lac Leman and the big alpsThere was a lot to smile about
Just as Mark2ts was about to offer us all some black coffee the leader (me) decided that we had better press on; we were now trying to keep to a 1.30 lunch schedule. My offer of a straightforward route or scenic route was met with short shrift, and the easier route was decided.
Descending into the Grande Combe towards the ski trail and SS routeKobie revelling in the powder and forging the trail ahead
It was not long before we were ensconced outside at our reserved table(s) and drinking some excellent beer – I thought I had reserved inside but we were all happy to be in the sun.
Mark’s panachet was a beer and a bottle of lemonadeRoss reckoned this was one of his better photos, so I have included it…
Ross had decided to eat his own provisions and it was not a problem for him to sit with us.
There were quite a number of other visitors, luckily not annoyed by KobieAnd many other dogs too, including MoosThe dog in the suit was Una (see story) with Moos
A nice lady introduced herself to me and said that she had met me and Kobie in Divonne in 2022. She so much liked Kobie, and the Cobberdog breed that she and her partner got one from Denmark in 2023. Una sported a full length-legging suit. They were very pleased with their choice, so seemed Una!
Enough dog talk. A rather good fondu for 4 was ordered as were röestis and croutes, helped down with a bottle of house white. We drank to absent friends, Larry in particular, also our leader Rob, but also Richard who was missed for his bottle.. Surplus to requirements, I donated my bottle of Chilean Cab Sauvignon to Maria, the proprietress and Moos owner.
Over lunch Mark2rs and I reflected on the fact that this is perhaps as good as it gets. Perfect snow conditions, no wind, sun, fine views to the alps (we could see Mt Blanc), hot cheese, cold wine, great company and only downhill to come (in life perhaps too, even if not always with our ski leader). Given that we were still only on 27 November when rain and wind is more the norm, we were very thankful for our luck.
We finished with apple and cream tarts and coffees.
Girding to go.
We donned snow shoes again for the easy stroll back down to La Givrine and the cars.
Follow the sun downRarely this good snow in November
I reckoned 10km and 304m denivellation. A truly magical walk in the Jura at its very best. Thanks for the company everyone. Kobie slept well that night.
We had hiked last week but as I had planned to be absent on 13 Nov, I chose to organise an impromptu (tonic) hike up the two peaks north of La Dôle.
A large number of excuses and apologies with varying levels of credibility were proferred, all were accepted – I’m a generous soul (I think). Six of us turned out, eventually at the starting point.
This is not a place for a dispute as to the location of the start of this hike. I will simply relate the following.
My Flyer stated :-
“Meet just after 10 at the parking above St Cergue at Couvaloup de St Cergue (W3W ///piglets.decency.duke), for an ascent of the Pointe de Fin Chateau and the Poêle Chaud.
Ross has done this with me earlier this year but I believe no one else has ever been up the path which goes directly up to the P de Fin Chateau. It’s not much above 400m of up but as it is steep I would rate it as moderate-hard.”
In the event one of our vehicles struggled a little to find the parking – and first tried the “Couvaloup de Crans” – a totally different place. We were indeed starting at W3w ///piglets.decency.duke (Michael found that piglet.decency.duke is in a Moscow suburb).
Why I also referred to the start as CoutzetAnd not L’Archette which is up a track.
The parking is actually at 1151m at the “Refuge de la Barillette” the large black building in the photo above. I would own that there is a board at the parking which indicates that one is at L’Archette, but that does not tie with the maps, L’Archette is up the hill.
We finally got sorted though. Michael Mathews came on his e-bike, and by car came Nathan, Mervyn, Peter Strebel, new initiate Chris Newton, and me and Kobie.
Mervyn, PeterSt, Nathan, Chris, Michael with Kobie and keen for the trail
We were swiftly underway, the vibe was good, the weather set fair with a bit of high cloud and intermittent sun expected later, temperature reasonable, little wind. The team were guided onto path Code-Red. Large splodges of red paint signalled the narrow path upward through pine and deciduous forest at a persistently steepening angle. We stopped a couple of times for short breathers but the trail relentlessly led upwards until finally one emerges into the open pretty much at the top of the Pointe de Fin-Château, 1556m. We had made the 400m in not much over an hour.
Arriving at the PdFC 1556m Time for some revitallisationKobie welcomes Nathan, view to the NW. Time for rest and recoveryVIew to the SW with the Poêle Chaud and La Dôle in the backgroundFabulous views across to the Alps, and we could also see far into France profondeIt was good to be up on the heights again
Once we all had recovered our breaths and rested it was time to leave, wandering down then on up the grassy ridge in still air to the Pointe de Poêle Chaud 1629m.
Lunch spot on the summit of the PdPCThe Leader with his owner – you choose (see previous photo too)
We enjoyed a very pleasant 45 minutes or so, sheltered from the slight breeze below a summit mound. Côtes du Rhone oiled the sluices and I did not have a choking incident. We drank to absent friends, one very far away, one with health issues. I was pleased that newly-retired Chris fitted in so well with our hike culture of reasonable effort and Last of the Summer Wine. I was also pleased that Kobie did not succeed in nicking anyone’s lunch. It seemed a very convivial affair, as are nearly all of our mountain picnic lunches.
PeterSt admires the spectacular view
It was all too soon time to pack up and return to the parcours. A unanimous decision was taken not to hike up La Dôle, we have all been there many times this year.
Michael trying out his new iPhone17 on an artistic log/dog.Starting the descent of the Col de Porte
Descending to the Col de Porte (1557m) we headed down the trail towards the Chalet des Apprentis. All of a sudden a large herd of chamois appeared ahead up the slope to our left. Kobie decided to make their acquaintance and he scootered off up the hill in pursuit. The herd tracked back across our PdPC skyline and they dislodged a large rock which came tumbling down above me. Happily I could judge that it would miss me by a few metres and I watched it bash noisily into an old tree stump. We watched fascinated as the bulk of the herd traversed the Col de Porte and danced swiftly across the steep ledges underneath La Dôle seeking escape from their lumbering golden pursuer. Kobie soon could be seen returning down the path we were on, sensible lad. He needed a lot of water to quench his chase.
The Leader had decided that the more interesting return leg would be over La Barillette (1528m), albeit one of our party decided on the more direct route to return to the cars – perhaps for a sleep (etc). We were soon there having taken the skirting path to the right avoiding the steep ascent from the Bent Tree.
Barillette – more great views to the AlpsAlways a privilege when we get such conditions Chris and Peter at the Tower of PowerGin Kingdom
From the tower the route tracks down the road to the Barillette restaurant (closed – much to the chagrin of an old couple who had just driven there- they said that the internet indicated that it was open…).
During the descent one gets a view of the morning’s ascent.
We were soon back at the cars, rejoining the member who had taken the easier descent option for a snooze. We were back before 3pm and siestas were the order of the day at home.
I really enjoy this parcours and it was made infinitley better by fine company and really nice November weather. The views were stunning and the whole day will linger in the memory into the dark depths of winter. I think Chris enjoyed himself too, new and younger life for our club.
I had recorded 9.1km and 559m – my watch/iPhone Session said – “Moderate”, albeit I had had 31 minutes above Zone 1 heart rate (112bbm).
Thanks to you all for the company and for putting up with me and my hound. Kobie slept well that night, no doubt with vivid dreams of chasing chamois to no avail.
The hike last week was cancelled owing to persistent rain. So this Thursday with the BLeader being in the South Atlantic no biking was arranged and instead a delayed hike was organised. Following Mrs Pashley finding the excellent, recommended and newly made “3 villages path” (above Bassins, Le Vaud and Marchissy) recently, Jill and I hiked it and I spotted a possible new section of forest to explore upward of this. Hence 6 of us with 2 hounds assembled at Marchissy (883m) at 10.15 am ready for an ascent to Cret de La Neuve (1494m). I had reckoned on 611m of up (simple math really).
Attending : 6 :- Peters Strebel, Solomon and Taylor; MikeH; Ross; RichardS; with dogs Kobie and Rocco. I had apologies from many, some ill, some away, some busy, some just chilling.
Our leader (me) selecting the route
Happily the paths above Marchissy are now well mapped and signposted and it seemed that my target of Cret de la Neuve was reached simply by following the Sentier du Coq, then heading NW up the ridge.
The trail up – gently up in most places with a bit of tarmacSome initial sun somehow evaporated
The forecast was good, and so it was a little disconcerting to be starting in the mist, the cloud had yet to lift. We set off in good cheer though following the wooden Coq signs, gently upward through the autumn forest colours.
Traversing an open stretchDogs lead the wayEventually we rose high enough that the sun reappeared
At one point we had to leave the Coq path and take to tarmac as loggers with noisy chain saws had closed the trail. It took about 2 hours to reach the top of the Jura ridge at the Perroude de Marchissy hut, with tell-tale (and very small) signs of the snow that had fallen recently. We turned right and wandered up the sunny slope to our old favourite lunch spot at the Cret de la Neuve.
Arriving in the sun – let’s have lunch !Ross and PeterSl with the sign of the crossDogs were given chews but soon tried to explore our sacksRichard in his element. Note – we were just above the cloud levelView to the Alps, sometimes obscured a little, but mostly magnificentHike Leader with his hound (nice pic Richard!)This is a really convivial spot for a glass of vino and a sandwich
A bottle of Bordeaux helped to relax the party and stopped me from choking on my sandwich. One hound perhaps ate too many of my chews too quickly and made an offering to Richard, which he then consumed (again). We met a courageous young lady (from Paris) there who was cooking up her lunch on a stove. Her pack included a tent and she was solo en route from Marchairuz to St Cergue.
Topics at lunch were many and varied. We toasted absent friends and one member told his favourite Margaret Thatcher joke – when visiting a care home she asked an old lady in a wheelchair – “do you know who I am?”. The old lady replied “I don’t know love, but if you ask at that desk over there they will tell you”.
Richard dug out his famous bottle and several of us benefitted from some Russian vodka.
The cloud rose as we moved to go and it suddenly got chilly.
Starting to leaveBeginning to leave under a hazy sun. Notice the Swiss flag.Typical of the way down
The descent, after a first steep section, was long and uneventful, easy angled with much walking on wide trails and some tarmac and the sun came back. At least this enabled plenty of chatting, and we were soon back at the cars, well before 3pm.
Fabulous views at the car park looking over MarchissyA fine view of Mt Blanc courtesey of Peter Strebel
I think we all enjoyed this one, visting an old haunt (for some of us) from a new angle, moderate hiking, in fine autumnal weather. My measurement today was 616m denivellation and 14km. Thanks to attendees and to those supplying photos.
The outline of our parlours with red bits showing higher heart rate. The highest (red) point left is the Cret lunch spot
Rob’s kingdom lies North of the Col de Marchairuz, while MikeH claims the South. Rob’s note went out :-
“For the upcoming hike I propose that we hike from Col Du Marchairuz to the Alpage Du Mont Tendre. The plan is we start at the Col at 9:30 am and take an alternative route up to the Alpage, with a return by the usual route.
The Col to Alpage route is 10.4 km, 465m denivelation and takes approx. 3hrs
Return to Col is 8.3km, with 300m denivelation and will take approx. 2hrs 30min mostly downhill.
I will arrange a booking at the Buvette for lunch.
The proposed mapped routes are attached.”
Outward RouteReturn Route
There were quite a number of apologies, some of which were apparently accepted. In the end seven and a dog arrived at the Col du Marchairuz at 9.30am on a cool and breezy morning. I entered the restaurant with Kobie who grew immediately very excited at seeing Rob, RichardS, Ralph, Rudi, Nathan and David, quietly enjoying a coffee. So excited that I had to take him out straight away without even checking to see if a new parrot had been installed.
Luckily I had an iced coffee in my car, so we were all soon caffeined-up and ready to go for this mammoth outing.
Rob last led this hike on 25 May 2023 when the following attended : – Peter D, Mervyn P, Andrew N, David C, Mike M, Mark Warren, Richard S, Richard W, Ralph and Robert P.
Lunch 25 May 2023
Re-reading Rob’s blog of that outing it seemed that he found it a bit difficult to keep the team together. There was to be no such replay today, well almost.
As can be seen from the first map above, the outrun involved one of Rob’s long shortcuts. Sadly loggers were in place so we had to slighly shorten the shortcut, but only by a bit.
The team, kitted out for the cool breeze. See below for an explanation of Rob’s thermal gear.
Happily the wind was behind us and we sailed along in intermittent sunshine.
Spring (well almost) in the air and in our steps
It was not long before we attracted some doggerel companions.
Kobie found 3 chums; it took some effort to discourage them from joining us
Just before Cunay, Nathan decided on a shorter shortcut and we found ourselves on very steep ground attempting to reach the main ridge.
Steeply up to regain the trail
By this time it was becoming clear that we were entering the cloud base, with some moisture and a chilling breeze.
At least the wind was in our sailsRob leads on, happy to be on the right track againLooking back as we approached Mt TendreLooking back into the wind from Mt Tendre summit. See below for how this view changed
We finally knocked the 1679m b—–rd off so it was time for some summit apèro – Chilean Cabernet Blend, el Parron, with some healthy nibbles.
Summit pre-loadingTime for lunch – off down to the Alpage
We were soon ensconced inside the Alpage at a reserved table, with room for Kobie by the door, beers were ordered and very welcome Old Boxer arrived.
King Rob holds courtAwaiting BoxerWhich soon arrived – and it was good
The croute was of the best
A very enjoyable lunch with much banter. Some politics, not much about Scotland. We solved a few of the world’s problems though. And Kobie at least had behaved acceptably well (I believe).
On exiting we found that the weather had changed – for the better
Time to face the wind, but happily the sun had come out and the wind seemed less cold.
Summit on the return. Kobie seeks and gets attention from admirersA much improved prospect from the summit
The way back is “mostly downhill” according to Rob (see above). It does not always feel that way, still another 300m up to go. But we were well fortified and somehow I had avoided the Saynor potion bottle. And the sun was nice.
Full team on summit
For those of you who have done this it is indeed a long way back and we strode on with fortitude.
Very pleasant strolling home. Its a long way though.Therapy dog given therapy at a rest stopMe and imLooking back down an up bit – but only 20m
The trail goes on and on, but after 8.3km we finally made it.
Finally at the cars
I think we were too tired for final refreshments at Marchairuz, so we simply said our farewells and left.
Before finishing I promised an insight into Rob’s thermal protection, allowing him comfortably to wear shorts in cold and windy weather.
Natural Scottish protection for Kilt wearers
A super day out 18.5km and 750m. A fine lunch and great company. One of our longer and more challenging outings. Well done to those who made it. Sorry for those who were not able to come.
Thanks Rob for leading us again through your kingdom.
It was time to re-attempt the Parmelan, known to some as the Parmaham, others as the Parmesan. Here was the flyer :-
Dear GinHikers, For this upcoming Thursday 17 July I am proposing to visit David’s old favourite, not the hard cheese normally grated, but – The Parmelan. The weather forecast looks to be dry.
Parmelan is one of the must-sees of Haute-Savoie. Visible from the surroundings of Annecy, its imposing cliffs dominate and make it a panoramic viewpoint that will amaze any hiker. The ascent by the Grand Montoir is delicate, with passages exposed to heights on a narrow and steep path. Although entirely secured by chains and ramps, the passage can scare people with a fear of heights; I thus advise the use of a rope.
The route I propose describes a loop which starts at the Bois Brûlé parking lot and descends smoothly through the Petit Montoir. The plateau of Parmelan is very sculpted by erosion as chasms and fissures form the lapiaz.
On the right of the parking lot, the path gets into the forest and becomes quite steep very quickly. Follow the direction of Chalet Chappuis reached in 20 minutes and already offering a beautiful view of Lake Annecy and Dents de Lanfon. Turn left to reach the junction with the road coming from La Blonnière, and continue again to the left. After a good walk, the trail gives the right to admire Parmelan’s cliffs and runs down to the bifurcation of the Petit Montoir where you take a right towards the Grand Montoir. By entering the Grand Montoir, vigilance is in order: the pathway, although secure, is still difficult.
Indeed the weather was set fair with early clouds forecast to disperse leaving a clear and sparkling day.
Richard had some fore-knowldege of a buvette on the top, which might have attracted more punters, but after receiving many apologies and excuses, some tendentious, some robust, five of us and a dog turned up at the Divonne parking at 9.10am, with Richard joining us later at the start. At the last minute MikeH pulled out for medical check reasons.
Attending : Mervyn, Nathan, Ralph, Steven (Ralph’s brother – a photographer from Blighty and who has been on previous hikes (Incl Le Salève)), me and Kobie with Richard meeting at the Parmelan parking.
As we approach the mountain a herd of cows gave an opportunity to take this shot from the car:-
The Lost World in sight behind the milk train
As we drove up the zig zag mountain road, cars in front and behind foretold that there would already be a number there and indeed it was a pretty crammed parking lot (at 1167m) as we arrived, but there was room for us all. Clearly the Parmelan was going to be busy today, but I saw this as a good sign in that here is a hike really well worth doing.
Richard arrived shortly after us and we assembled for the task ahead, 700m of up, steady at first but getting steeper and a little tricky in the Grand Montoir. The weather was perfect and the team were in high spirits, including Kobie who was pleased to be back in the peloton.
Kobie arriving at the first view point at Chalet Chappuis 1251m. Les Bauges in the distance.Initial views over AnnecyAnd beyond
At Chalet Chappuis the views are expansive and give only a hint of what is to come. We continued steadily up stopping for a drink at the 1500m level before the path bifurcates, Grand Montoir to the right, Petit Montoir (and our descent route) to the left.
Initial drink stop
There are notices here that the paths are dangerous in winter when the gulleys are snowed up, as when twenty five years ago or more I recall they were badly verglassed and Jill and I retreated.
Peter carrying two pairs of sunspecs, one being Ralph’s he had left on a rock
And so to the crux section of the Grand Montoir and I fixed Kobie on his leash. There were a number of parties ahead of us, but all moved steadily up in good humour.
The tricky section commences – Steven and Kobie (cleaned up pic)Be a Wares of what lies ahead! Two Wares looking wary, and Kobie bemused at followersNathan making steady progress with Richard behind
The path steepened and some exposure began to be felt. A stout wire was available for pulling on or just for balance.
Perhaps the crux move with the wire being usefulSame move from belowMervyn using the key foothold, a metal peg (that Kobie didn’t use.. and possibly Ralph too)Onwards upwardsKobie leading me up. The kind lady in blue ahead gave us some water for Kobie later in the day
We zig zagged up the steep trail, passing some, allowing others past us.
Ralph enjoying the climb
We all regrouped after the main section and took the final steep section at leisure – well almost. Soon at the col, Kobie looked for shade while we regrouped again.
A notice stated that dogs should be on a lead as the chickens thereabouts are aggressive, so I retained him on the leash. The team all looked in good shape and I think had enjoyed the mild excitement of the steep path cut in rock. So we tootled up the remaining 80m to the hut at the top – the Chalet Hôtel C.Dunant, next to the Croix de Blondet.
Richard passes the Savoie Flag near the summit hut, high mountains behind. Steven’s Flag shotCrowded summit. But superb views.
There were quite a number of folk at the top, enjoying the fine views. As Richard had predicted the restaurant/bar was open and we went inside to escape the sun. Ralph ordered large beers for us all which were cool and refreshing.
Ralph ordered beersWatering the dog
Suitably refreshed we set off to conquer the actual summit of the Parmelan, not far off.
Summit cross.Summit View, Salève and Lac LemanSummit View WestwardAnnecy Lac in zoom (Steven shot)Annecy in full viewIndeed the views were stunningGin Members atop the Parmelan
It was time for lunch and we found some suitable rocks close to some shade for Kobie. Some red wine was shared and we did toast absent friends. They were missing a real classic. Kobie benefitted from Richard’s suasage and apple.
Lunch stop, as good as it getsUp in the high life again
We all agreed that the fluid from Richard’s bottle was indeed excellent. Sirin Lingonberry liqueur from Finland.
Parmelan picnic banterHikers at the top seen from our picinic spot, Kobie under an adjacent tree in the shade
Well refreshed and in a merry mood we upped sticks and set off back down to the col. An alternative but longer route traverses the lapiaz, but this was not needed today.
Starting the descent with the lapiaz in the middle ground.
We had some astounding views over to the big hills, with Pointe Perćee not too far off. It was warm and Kobie, having escaped from the aggressive chickens, took time to shelter from the sun.
Kobie shelters as Steven is supplied with meds (Magnesium tablets)
We stopped as Steven expressed signs of cramp, and he took on some mag tablets. This would not have been of interest for this record but for what happened shortly afterwards. We set off back down the trail towards the Petit Montoir and within 5 minutes or so at the front I heard news from the back that Steven had turned back; he had left his camera on a rock when we had stopped. Very shortly after a young lady appeared holding Steven’s camera. We thanked her profusely. (Richard believed she had looked at the photos in the camera and recognised us from crossing us in her ascent).
All that was needed was to recover Steven. We called him by phone and he was soon reunited with his beloved camera, relieved if not over the moon.
Steven get’s his camera back.The easy trail of the Petit Montoir (the Parmelan above)The trail passes under the big cliffs
The trail descends gradually and then traverses back under the cliffs to the junction with the path up the the Grand Montoir. It was here that the kind lady gave Kobie some water from her pouch. We moseyed on down to the Chappuis Chalet where chickens were wandering among the hikers.
Chappuis 2, on the descent
On the final trail Kobie took an early bath.
Kobie posing in the bath
We were soon back at the car and rehydrating. It had been a warm hike, getting hot finally.
We said farewell to Richard and all the other fellow hikers we had been meeting on the trail, before driving back to Divonne (1 hour, no trouble) and then over to Mervyn’s for some cool beer in the garden.
Summing up the day
A super hike in great weather, fantastic views and great comapny. I had 701 m (not 750m ?) and 11.5km (not 9km ?). My monitor also showed I had got my heart into level 5 (145 bpm and over) for 30 seconds. This rarely happens on hikes…. And Kobie slept well that night. Thanks for the fun everyone.
It was to have been the Parmelan. But the weather forecast was not the best, albeit I kind of promised dry weather. So 6 of us showed up at 9.30 at the Divonne Lac parking, with Kobie. And Stephen met at 9.50 at Genolier, hoping for a gentle hike. I had hinted at 700m or so, with a gist of a plan to come down by train from St Cergue back to Sus Chatel.
Attending : Nathan, RichardS, Mark2ts, StephenL, BillW, Ross, and me PeterT, and Kobie. Apologies and excuses had been received from many, mostly plausible.
The forecast seemed to have worsened but almost 43% turned out in optimistic shorts.
Not all wore shorts but all had two sticks. Stephen,Ross, Bill, Nathan,Richard, Mark, Kobie.And me with an eyelid problem..
We commenced by crossing the train track and heading up alongside the streamway where Kobie got some refreshment. After a slight break to take in the intimate stream landscape we continued on up, those at the front wettened by the close damp green leaves enfolding the path.
We soon arrived at Rob’s Gully, famous to the cognoscenti – which the team were rapidly becoming. At the top the path levelled out and a discussion ensued on prime numbers, in particular 17 which is a special number. And the fraction 1/17 has a coninually repeating 16 string decimal, a repetend.
153 is also an important number related to 17. Mark had some irrational pronouncements about rational numbers which none of us could make head or tail of. It all made for some light relief to the light rain which was beginning to fall.
My bedtime reading
No rest for the wicked and we continued up in what could have been Amazon rain forest. Muggy sticky and green.
In the rain forest, but neither Nathan nor Mark seemed to want to put on their rain jackets.Looking ahead to the scouting party.
The rain became a little heavier but it was not cold and we topped out at the Arizier Road in good order. A short stretch along the road, now partially in the cloud and driving rain, took us to the right turn which led through fields then into the upper forest. It was at this juncture in the lee of a large hedge, that the leader relented and offered the team a vote – to bail out and go directly to St Cergue for a pizza etc, as it was about midday already. We were saved by Mark’s phone which showed that the rain was about to end and that we could expect at least a two hour (relatively) dry spell. Vote cancelled!
What that meant was another 5 km and 300m ascent to the Fruitières de Nyon. The leader had a perception that the team were beginnng to become subdued, little was spoken as we trudged higher. A short revitalising stop was permitted before the final stagger up to the FdN under cloud and some wind, but no actual rain.
It was almost 1pm. We were alone and had several tables to spread out over, but huddled together for companionship.
Lunch with some Italian redsSome cheer began to return, my left eye not improving…
At some stage black (or perhaps red) kites swirled over us in the maelstrom. A nesting pair of swallows were seen on the roof of the FdN itself.
The Lac actually came into view as did Richard’s incredible bottleI didn’t understand what it said and I don’t think he did eitherA nice lunch spot with dry furniture – but that was odd after all that rain ?Richard showing someone in a suit and tie – but who ?
A pleasant lunch, nobody choked so I (or they) did not need to use my LifeVac (I did provide a short demonstration just in case, as I had bought another soggy wrap from the Volg). Nathan helpfully suggested that I could reduce my choking risk by not choosing the soggy wraps. Mark offered strong black coffee and Nathan his Japanese whisky. Kobie had some good chews and part of a pork pie.
We were ready to go. The plan now was simply to descend to St Cergue the easist way, avoiding the intial steep and damp path. We took the road down.
On down the long road.Ross seemed happy
We took the trail right past the youngsters on their zip wires at Basse Ruche and arrived in St Cergue at 2.38pm just after the train had left. Undaunted we tramped over to the boulangerie café (Le Ptit Gourmand) where Richard treated us all to a warm cuppa (each!).
Warm and refrehsing cuppa
Richard had not yet paid just as we realised we had 2 minutes before our 3.07pm train was due to leave. We held the door for him just as it was leaving and we settled down for the comfortable train ride back down the mountain.
Kobie had a half price ticket but took up two seats…
From Sus Chatel it is only a short hop back to the cars.
Another memorable hike, which Kobie and I do quite regularly, but I found quite hard in the conditions. Both Kobie and I were exhausted that evening.
12 km. 740m or so of ascent.
Posting a Comment later from Mark:-
I can’t let an opportunity for a bit of maths pass so here’s what I think the guy was saying about 17 (already shared part of this with Peter). Also here’s a proof that any number with repeating digits must be rational.
The decimal expansion of 1/17 repeats after 16 digits
Perform the division by hand. Write out a few lines 0.0588 17) 1 00 85 150 136 140 136 4
At each step there is a subtraction with the result (highlighted in red) must be less than 17. If the result is zero the decimal expansion terminates. If it is a repeat of a previous result the decimal expansion repeats from here. Therefore the repeat length can’t be greater than 16
In general for any integer, n, the maximum repeat length must be n-1 and is usually shorter. I believe it must be shorter if n is not a prime since if n = r * s the maximum repeat length should be the product of the repeat lengths of r and s, i.e. (r – 1) * ( s – 1) < n – 1
The repeat length is not always n-1 if n is a prime. c.f. 2, 3, 5, 11, also 13 (repeat = 6). So 17 is the smallest prime with this property.
Any decimal with repeating digits must be a rational number (ratio of 2 integers)
Assume X has repeating digits with a repeat length of n digits
X may have some digits before the repeat starts, e.g. 1/6 = 0.1666… Subtract off these digits and then multiply by powers of 10 until it is of the form Y = ( X – X0 ) * 10m = 0.a1a2…ana0a1…an… above is not strictly necessary but simplifies the next step
Now calculate Z = 10n Y – Y = a1a2…an, an integer
Now work backwards Y = Z / ( 10n -1 ) X = Y / 10m + X0 = Z / { 10m ( 10n -1) } + X0 , clearly a rational number
As an example try X = 3.142857142857… X0 = 3, m = 0 , n = 6 Y = 0.142857142857… Z = 106 Y – Y = 142857 an integer Working backwards we get Y = Z / 999999 = 0.142857142857… = 1 / 7 X = 3 1/7 = 22 / 7
Once again, thanks for a great hikeand for some mental stimulation., Cheers, Mark
Mayday mayday. Normally a call for help – but happily no infarctions or other incidents occurred on this first bike ride for a while and the first with our BLeader for 2 years (he recounts).
There should have been eight of us but sadly Drew had to pull out so we were the Magnificent Seven instead of a Great Eight. It was indeed a magnificent day and we all assembled at 10 am at the Everness. Attending Stephen (Bleader), PeterD, Ralph, Ivan, E-Paul (who had biked out from Geneva) and E-Richard, with me (out on my 3rd ride of the year).
Only one small cloud at the Everness meeting point
Stephen has adapted his bike to accommodate a leg that does not (yet) bend quite enough, after his knee replacement. A fascinating but simple additional pedal and crank attached to the original pedal crank.
I found an example on the internet that looks similar to the one he has on his bike.
An amazing crank device that does the trick for Stephen
There was a feeling of good cheer in the team, a shining sun, a lunch at Coinsins and only a Bonmont in prospect to spoil the pleasure.
E-Richard with Stephen and PeterDRalph and E-PaulAll seven of us.
We set off gently through the woods and over the Versoix River to Grilly. Talk of a coffee at Crassier morphed into a coffee at Givrins after achieving the Bonmont goal. We traversed Divonne and headed up towards Bonmont passing Tranchepied. The angle increased as did the effort. E-Bikers sailed up the hill while 5 of us struggled up. Ralph complained that his bike was designed more for flat and downhill riding, but he made it. The temperature was perfect.
Me with my bike at the St Bernard sign (I have 240 similar photos from 2020)The team at Bonmont with Ralph adopting the brace position
After a period of self congratulation we headed off down for a Givrins coffee. Except that our BLeader took an executive decision to forego coffee in favour of earlier beer at Coinsins. We freewheeled down in the warm morning weather and turned into the carpark at the Coinsins restaurant. Being 1 May there were quite a number of diners in place already.
There followed some excellent beers and we all chose the steak frites, except Richard who chose the sausage but with frites not rösti. Much discussion still about Trump, the state of the world and growing vegetables. Paul had just returned from Indonesia and was still jet lagged, but he was energised by the wonderful sub aqua and temples he had just experienced. Ivan was recovering from a bad knee accident playing basketball but now seems on the mend. Stephen seemed relaxed and indeed cruised the whole route with his offset crank. Richard back from 3 months in S.Africa seemed good to be back.
After coffees we all heading back to Gods Crossing, with first Paul turning left to the Nyon train, then Ivan breaking off to his home.
A really pleasant ride with a Bonmont that looking back did not seem too hard, and a great lunch outside on the terrace under a substantial sunshade.
Nathan organised this excellent hike warning us however, in view of the uncertain weather forecast, to “be prepared”. He recommended us to refer to Philip’s description of the terrain, from his 30 March 2023 blog. See below in blue. (Philip also reported in 2023 that his search of the “dusty GIN blog archives” revealed that a similar hike was organised in June 2018 by David Colledge. There were three participants then, an indication of the significant increase over the last 5 years in GIN hiking interest.) I note that David wrote – Lunch in La Cave de la Ferme in nearby Frangy – highly recommended with 4 course lunch at €16.50.
Further research into the dusty GB archives showed that David organised another hike up the far end of the Vuache in May 2019 from Chevrier with 4 attending. David wrote “altogether about 3.30hrs followed by a very reasonable lunch at Restaurant du Vuache.”
Philip : “The Vuache is a long lean mountain. Not at all a Fujiyama. Not even a Môle. But I see it every morning from my kitchen balcony. And it tells me what the day’s weather will bring. Geologically it’s part of the Jura range. Good Jurassic limestone, no doubt riddled, like the Salève, with water-filled cavities. And maybe bottomless potholes that nobody has explored. But physically it’s an isolated mountain, cut off eons ago by the melt waters from the immense Rhone Glacier that filled the whole Lemanic basin. And it holds secrets known only to those who explore it in early Springtime.”
On that hike in March 2023 hike we were 11 : two Marks, PeterT, Nathan, Rudi, Richard, Mike M, Ralph, Drew, Mervyn and Philip and hounds Kobie and Nessie. On this hike we missed Mark 2ts, Rudi, Richard, Mike M (and Nessie) and Mervyn. We added on this occasion Mike H (and Rocco), Stephen and Ross and were thus 9.
(I was told that several absent members have poor knees – at least they gave that as an excuse to Nathan. I can only recommend daily taking Pernaton tablets – they have saved my knees. )
Unhappily the timing this year was different, it not being early Springtime. So we missed the wonderful display of daffodils (that we had seen two weeks ago on Mark’s Dôle hike). And unhappily too the warm sunshine we had enjoyed two weeks ago was missing and we experienced instead a cold dry and windy day almost exactly as per 30 March 2023.
Same route as in 2018 – but my watch showed 9.2km and 546m denivellation
It did not start that way as there was some weak sunshime as we ascended the ridge from Chaumont attempting to catch up with Philip who had started 15 minutes earlier.
Nice early sun – luring us up into the cold grey Vuache againNear where we met Philip
We caught Philip up after about 300m of ascent. He was gayly and gently elevating himself up the ridge, stopping to take close-up photos of the plants he loves (not daffodils though).
Philip writes : –
Thursday’s ascent was the first time that I had seen wild orchids actually in flower on the Vuache. Having given myself a 15 minute head start on the peloton, I had time to photograph them (and have a breather!). The GIN plant enthusiasts, of which I’m sure there are many, will no doubt welcome this botanic addition.
I have given the relevant plant names to the photo files. I’ve also added one non-orchid, Sainfoin, the reason being that it’s a real beauty, whose identity had me initially confused until PlantNet put me right.
At one point Ralph kindly offered us all a cup of his hot strong black (and good value) coffee. Excellent! I almost did not miss Mervyn and his milk.
Onwards into the gloom
At a large green field two chamois (or deer according to Mark) broke cover and Kobie went off to investigate but soon came back. It was not long however before he found a leg bone of a deer (or chamois) left by hunters and he and Rocco spent some time arguing over who should eat it. Both won.
A bone struggle
We wandered on up along the woodland path which traces the spine of the hill, in places steep and rocky. I spotted only 3 daffodils still in flower, but there were many other flowers (Philip will tell us).
Summit party 2023Summiters 2025 – 1101m Vuache With hounds Using my (good value) selfie stickPhilip and Nathan came along a little later
On the way up we had noticed a picnic table at the top of the green field and members retraced steps back to it, keen to tuck into some warming sustenance and whatever wines were on offer. In this case a Nero d’Avola and a Rasteau. Drew of course had his flask, but we missed Richard and his abominable bottle.
Philip wrote 2 years ago :- There was no handy auberge nearby, so we ate our picnics (in a particularly windy spot) with extensive views over the Rhone Valley and in the distance the Plateau de Retord. This time we had the same wind and views, but the advantage of a (slanting) table that sat 8 of us, albeit we were 9.
Descending – not like spring here.View back to Lac LemanThe view below – with scudding low cloudDescent to lunchLunch table – uphill sideThe picnic table was not exactly level..
All too soon it was over. No time or inclination to discuss Scottish independence. This was a time of Trump Tariff madness.
On the return, we initially retraced our steps but then Nathan again deviated down the steep western slope of the Vuache, fortunately relatively dry and unslippery. This took us through the hamlet of Chaumontet and back to the village of Chaumont. (most of this para was copied from Philip’s 2023 blog).
We passed some very young climbers about to start out on the training rock slabs.
Another enjoyable hike on the Vuache, despite somewhat inclement weather and gone daffs. About 10km and 546m denivellation. Thanks Nathan.
Attendees – MikeH and Rocco, Mark2rs, Drew, Stephen, Ralph, Philip, Ross, PeterT and Kobie, Nathan (Leader).
(I’ll post other pics if folk send me any – or do it yourself if you can. PT)
We were 26 “Gintlemen” for our lunch at the Auberge des Trois Tilleuls in Genolier village on Thursday 3rd April:
Norman Eatough
Peter Taylor
Chris Morris
Gary Van Natter
Mark Watts
Kent Forrester
Robert O’Riordan
Rudolph Staehelin (new member)
Trevor Davies
Stephen Long
John Burley
Peter Drew
Joe Kutzin
Drew Meek
Terry Gale
David Colledge
Mark Warren
Philip Jenkins
Mike Clayton
Richard Saynor
Reinier Tervooren
Mervyn Powell
Mike Price
Brian Allardyce
Jeff Shane
Jeffrey Crudgington
🍽🍷
Jeff
It was a fine lunch with excellent food, wine and service all at a good value price, in wonderful spring sunshine. Many thanks to new member Rudolf for sponsoring extra wine. We had the whole of the back room to ourselves. Jeff introduced the staff to us at the beginnng and again thanked them on our behalf at the end. This is a restaurant well worth revisiting.
Photos below taken at/after coffee. All self-explanatory.
This is a short record of a necessarily limited group visit to CERN on 22.2.2025.
On 4 Jan 2025 a few selected folk received this email from Mervyn.
“Firstly, Happy New Year to one and all.
Secondly, here is your exclusive invitation to join a private group visit to CERN.
We will have the services of a qualified guide, an ex-CERN employee, friend and neighbour, Dr. Gunnar Fernqvist on
Date: Saturday 22 February 2025
Draft Programme:
09:00 Rendezvous at CERN Gateway (Parking available)
Introductory film
Selfguided tour of the exhibition area
10:15 Depart (by car) for underground visit of the LHC
11:00 Visit the CMS
12:00 Return by car to CERN
12:30 Lunch at CERN
14:00 Walking tour of other CERN exhibitions and sites
16:00 End of visit
IMPORTANT
Please confirm your interest to participate by return email as capacity is limited to 12 (adult, able-bodied, non-pregnant!). Please state your name, nationality and date of birth.
Joining instructions will follow once group participation is established.
Brush up on your physics!
Mervyn”
The day 22 Feb 2025 finally came around, grey and a bit cold. Rob picked me up and then Ross before we drove to the CERN parking near the Gateway. The Science Gateway is a much improved visitor centre (from the original that I had experienced 25 years or so earlier).
To plan a visit – see
https://visit.cern
CERN Science Gateway
CERN Science Gateway is a place to explore CERN and science through authentic, innovative and inspirational experiences. It is CERN’s new education and outreach center, where we take visitors on a unique journey building on the physical proximity to CERN, its accelerators, detectors, facilities and people.
Through immersive multimedia exhibits, hands-on lab workshops, science shows, events that blend science and culture, innovation-prototyping workshops and tours of authentic CERN places – all guided by CERN people – visitors of all ages and backgrounds can engage in the discoveries, the science and the technologies of CERN.
Our vision is for a world where science and learning are part and parcel of everyone’s life. Our younger visitors may leave inspired to explore a career in science and technology. We hope that all visitors will feel empowered to make sense of the science that shapes their lives.
This vision is housed in an iconic building designed by the world-renowned Renzo Piano Building Workshop, with support from Brodbeck-Roulet architectes associés.
An iconic building
Inspired by the diversity and curiosity that are intrinsic to CERN, the building encompasses multiple elements, embedded in a green forest.
Five different spaces host three exhibitions, two hands-on labs, an auditorium, a shop and a restaurant, all connected by a 6-metre-high bridge that spans the main road in front of CERN. Two suspended tubes mirror the cutting-edge technology of the CERN accelerator complex. Raw shapes and forms, and exposed concrete celebrate CERN’s industrial character.
The building symbolises the inseparable link between science and society, with sustainability at its core. Almost 4000 square metres of solar panels provide energy to the Science Gateway and other CERN buildings. A forest of over 400 trees and 13 000 shrubs provides a habitat for animals and plants. When in operation, the building is carbon-neutral.
We reinforced ourselves on quantum coffee as 12 of us assembled, a leader and 11 bosons, not all GIN members but all with an inquisitive bent.
Gunnar Fernqvist (Leader)
Mark Watts
Lynda Watts
Henry Watts
Richard Saynor
Paul Sochaczweski
Mervyn Powell (Organiser)
Peter Taylor
Robert Pashley
Ivan Rykov
Ross Linsley
Philip Jenkins
We had a strict timetable to adhere to as CERN receives thousands of visitors per week and parties are guided on timed visits. During our visit we noted parties bumping up behind us when we asked too many questions or lingered a little too long, but this was not a serious hindrance and we did not collide.
We started up in the Gateway to watch the introductory film, but a large group of Italians visitors (in 3 coaches) were in the mix so the whole film was to be in Italian. We decamped instead to the Gateway exhibitions where Gunnar explained the basic working of the LHC and its related experiments (ATLAS and CMS (Compact Muon Solenoid which we were to visit) being the hi power ones).
Gunnar gives us an outline of CERN in the visitor Centre.
Here is the basic outline of what CERN seems to be all about :-
The European Organization for Nuclear Research – known by its French acronym, CERN – is the largest particle physics laboratory in the world. Located just outside of Geneva, Switzerland, it was established in 1954, as one of post-war Europe’s first joint ventures, with the express aim of halting the ‘brain drain’ of talented scientists leaving the continent for America.
Today, more than 10,000 scientists hailing from more than 100 countries find themselves at CERN each year to use its facilities, which include some of the biggest and most complex scientific instruments ever created. Their goal: figure out what the Universe is made of and the laws of physics that dictate its behaviour.
What does CERN do exactly?
At CERN, the European Organization for Nuclear Research, physicists and engineers are probing the fundamental structure of the universe. They use the world’s largest and most complex scientific instruments to study the basic constituents of matter – the fundamental particles.
Why was CERN built in Switzerland?
Switzerland was chosen to host CERN to a large extent because of its neutrality and its safeguards against the misappropriation of scientific research results for military purposes. This was especially important when the organisation was established in 1954 because the world was just entering the Cold War.
What has CERN done for humanity?
Crystals developed for CERN experiments in the 1980s are now ubiquitous in PET scanners. Today, CERN’s unique expertise and technologies are being used in areas related to medical diagnostics and imaging, therapy as well as computing and simulations for health applications.
CERN’s work, including attempts to create tiny black holes for studying antimatter, is conducted under strict safety protocols, with the organization and the scientific community affirming the research poses no threat to the planet.
Who funds CERN?
CERN is publicly funded by its 23 Member States and Associate Member States. Find out below about how this investment creates a positive impact on society.
The Large Hadron Collider (LHC) is the world’s largest and most powerful particle accelerator. It consists of a 27-kilometre ring (100 metres underground) of superconducting magnets (cooled by liquid helium) with a number of accelerating structures to boost the energy of the particles along the way.
The CERN accelerator complex accelerates protons, but also nuclei of ionized atoms (ions), such as the nuclei of lead, argon or xenon atoms. Some LHC runs are thus dedicated to lead-ion collisions. The ISOLDE facility accelerates beams of exotic nuclei for nuclear physics studies.
Complex being the operative word
The particle collisions recreate, for a fraction of a second, the conditions that existed moments after the Big Bang, when the Universe was born. By studying the debris of these collisions, physicists try to settle mysteries such as what matter is made of and how particles get their mass.
The LHC, which was completed in 2008, was built primarily to put the Standard Model of particle physics to the test. This wildly successful theory from the 1970s describes the interactions between the 17 elementary particles and three of the four fundamental forces of the Universe: electromagnetism, the strong nuclear force and the weak nuclear force (gravity is the fourth).
What happened at CERN in the fall of 2008?
On 19 September 2008, a magnet quench occurred in about 100 bending magnets in sectors 3 and 4, where an electrical fault vented about six tonnes of liquid helium (the magnets’ cryogenic coolant) into the tunnel.
What discoveries have been made at CERN?
Highlights include the 1983 discovery of a pair of elementary particles called the W and Z bosons, which was later awarded the Nobel Prize for Physics. British computer scientist Tim Berners-Lee helped invent the World Wide Web at CERN in 1989 by developing a way for computers to talk to each other, called hypertext transfer protocol (HTTP).
In 1995, CERN scientists were the first to create atoms of hydrogen’s antimatter counterpart, antihydrogen. In 2000, they discovered a new state of matter: a hot, dense, particle soup called quark-gluon plasma. And the Higgs boson, predicted by the Standard Model of particle physics, was observed for the first time in 2012 at CERN’s Large Hadron Collider (LHC), scooping its discoverers a Nobel Prize. This discovery confirmed a crucial part of our understanding of how particles acquire mass.
One CMS photo showed (apparently) that the Higgs boson is produced in the collision of two protons at 14 TeV and quickly decays into four muons, a type of heavy electron which is not absorbed by the central part of the detector – but in the outer muon detectors.
The discovery was a big win for fans of the Standard Model, but the theory is incomplete. It leaves many questions open, such as: what is dark matter? Why does the Universe contain more matter than antimatter? The LHC may help answer these questions.
Things could really start to get exciting after the next long shutdown, currently slated for 2026-2028. During that time, the LHC will be upgraded so heavily that it warrants a new name: the High-Luminosity LHC (HL-LHC). Over 20-plus years of operating, the machine will work up to generating luminosities nearly 30 times greater than those produced to date, allowing physicists push the Standard Model to its limits.
And the search for new physics doesn’t end there. A proposed new collider – theFuture Circular Collider (FCC) – would dwarf the LHC. “It’s really just a concept right now, but ultimately this would be an even more powerful collider that would be 100 kilometres around. The LHC ring would basically just be the booster ring for the FCC!”.
Gunnar, being an electrical expert, sparkled with energy, especially when describing magnets and the power supply aspects of the LHC. In particular in his time, his team were challenged to get a firm control on the current such that it provided for a finely controlled and powerfull magnetic field to bend the accelerated particales around the ring, focussing them in the centre of the vacuum tube such that they never touched the sides (which would have given rise to the magnets becoming non-superconducting and exploding as in 2008). The power in the circulating paricles is so high (of the order of a jumbo jet) that in order to quench it (every few hours or so), the particles are brought offline and sprayed into a 300 m long carbon dump – which becomes radioactive for a while.
Gunnar was keen to show us that while we did not have personal radiation detctor devices for our safety, he did, and he demonstrated that his read zero radiation before and after (hence during) our visit. Safety is a big part of the CERN operation.
We did get back to see the initial part of the introductory film before time beat us and we were required to whisk ourselves away in a quantum leap across the ring (in our cars) to the CMS Experiment at Cessy across the border in France.
We descended 100m underground in a large lift, after a safety lecture, down to the airlocks and tunnels into the vast CMS chamber. The huge cylindrical detector lies on its side surrounding the thin beam pipe (somehow the two pipes form one in the detectors).
It was partially disassembled in that the final disc detector had ben slid forward, and workers were paying it some attention. When the beam is running this chamber is filled with radiation and personnel are kept well away.
Gunnar in CMSEngineers fiddling aboutMany Watts go through this tunnel
All too soon we were required to return to the surface as another party was coming in. The drive back to CERN centre for lunch led us to the chosen restaurant in a far corner of the CERN site, but sadly being Saturday it was closed. No worries we decamped to the main restaurant. This science stuff can bring on a good appetite.
After Lunch
The afternoon was spent at the Anti-Matter Factory, the old original Proton Synchrotron, and the Atlas Control room. Each were fascinating and we plied Gunnar with plenty of questions which he ably asnwered.
A very odd state of matter – apparently it is quite normal in nature :-
Natural antiparticles
• A person weighting 80 kg produces 180 anti-electrons (positrons e+) per hour from the desintegration of Potassium-40, anatural isotope
• A banana produces 10 e+ per second
A key experiment going on seemed to be seeing if anti-particles are affected by gravitiy in the same way as particles, and it seems they are: attracted by the earth and not repelled.
Antimatter decelleration ringInside the Anti-Matter factory. Does it do anti-aging too?
The Proton Synchrotron history is explained in this film.
As the beam was down, no actual personnel were present and nothing was happening but again Gunnar brought it back to life for us.
All in all an amazing day – a visit to CERN, even without the special visit that we were given, would be a wonderful day out for anyone with a fascination of life, the universe and everything.
Final drinks
Many thanks to Mervyn for organising and to Gunnar for being our guide into this mind bending place. I’m off to eat a banana…