Good afternoon all speleologists!

I have been writing in the Royal Meterological Society's 'Weather' publication for a number of years now. I write about survival of snow on the hills of Scotland, Wales and England. For many years I had assumed that no snow survived in England much past May or June, and that if it did it would be generally in the Pennines or Lakes.

However, I received a report from a caver a few months back, informing me that he came across a large snow plug in November 2010. The report of the correspondence, and of the general chat, is here: http://www.winterhighland.info/forum/read.php?2,149146

What I'm after is a report from anyone on here as to whether the huge snow deposits of late March has filled up the hole in any way. The opening is aligned SE/NW, so would have been ideal for the snow that fell recently. Any reports or photos would be most welcome indeed.

A long shot... I will be up that neck of the woods on the week commencing 22nd April. I'd be dead keen to actually get down there, if that's at all possible. Can anyone point me in the right direction?

Thanks,
Iain
iainjamescameron@hotmail.com

I believe it also happened in the late 1970s - 1978 or 1979?

You will be interested to see this report then...
http://ukcaving.com/board/index.php?topic=14940.msg195708#msg195708

As for getting down, you'll need to be proficient at rope techniques, as it's one of the deepest surfaces shafts in the area.

It did indeed I remember going down in late 70's and finding way through blocked by snow/ice in August!!! There had been no snow on surface for many months.

Thanks chaps. I've emailed Paul to ask him what depth there is.

As for the year in the late '70s, my guess is 1979. That year there were also massive blizzards from the east. A patch of snow persisted in the Pennines until 18th August, on Great Dun Fell. That would square with the dates being discussed.

I'm an utter novice, so it seems I will have to wait for others to report their findings!

Thanks again, and if you know any others going down there then please mention my name!

Iain

To be honest, the snow doen Eldon Hole is more like a Victorian Ice House as it is about 200 feet deep and when there is an appreciable amount of snow down there it can persist for many months. The ambient temperature in caves, once you are well away from the entrance, is roughly the average for the location, so it would be fairly cool down there without the snow anyway. Quite different from snow persisting on the surface.

Whet worried us was the large chunks of snow and ice hanging in the edge of the East wall on the surface (we descended via the North Gully and there were no footprints from previous visitors) - especially when the sun made an appearance and started melting things...

paul said:

To be honest, the snow doen Eldon Hole is more like a Victorian Ice House as it is about 200 feet deep and when there is an appreciable amount of snow down there it can persist for many months. The ambient temperature in caves, once you are well away from the entrance, is roughly the average for the location, so it would be fairly cool down there without the snow anyway. Quite different from snow persisting on the surface.

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Quite right. The difference is that snow/ice does persist in similar situations in caves across Europe (doubtless further afield, too, but I've only visited European ones) on a regular basis. Thus this remains an interesting datum point for researchers such as ronofcam.

A lot also depends on altitude. For example the Northern Caves guide states that the entrance to Knock Fell Caverns (east of Penrith) is "normally" blocked by snow, December to April. Anecdotally that snow can last much later in some years. This cave entrance lies at 762 m but it's just an ordinary shakehole, not an "ice house" situation.

Several hundred miles further south in the French Jura (and from memory at no greater altitude) is the Grotte De La Glaciere. I think this has snow at the bottom of a huge sloping chamber all year round - but this is an "ice house" situation, in a way like Eldon Hole. On hot summer days, this snow is the main feature attracting tourists to this show cave.

I was up on Ingleborough this afternoon and many of the bigger shakeholes still have very substantial amounts of snow in. Unless we get a heat wave I'd like to bet that snow lasts a fair while this year. Certainly some of our well known potholes have been blocked by snow for some time.

I recall going down Eldon in July to find that the "North" route, usually 90ft was only approx 47ft,(measured by ladder lengths), blocked by snow, I thought this was in the earlier '70's, but I may be wrong, IIRC the route through to the chamber stayed blocked for a couple more Winters (by snow).
I think this was a joint trip, VOPS and MCEST, before I joined TSG, anyone out there recognise those initials?.

Thanks everyone for replying.

I'd be very grateful if anyone who goes down there could keep an eye out for the snow that will undoubtedly persist for while yet.

Paul reckons there is a good few feet of depth there. Be interesting to know exactly how much has settled at the bottom.

ronofcam said:

Paul reckons there is a good few feet of depth there. Be interesting to know exactly how much has settled at the bottom.

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A lot. The problem is that the floor slopes steeply down to the continuation of the underground section of the cave and the snow tends to level out so it isn't easy to estimate the quantity.

Plus there was still quite a lot of snow and ice overhanging from the surface above wo we didn't hang around for long - especially when the sun came out and things began melting...

A group from the TSG went down on 17th Feb, with deep snow on the east and west pitch heads - the west being a particularly large cornice that had to be kicked down to even get near the edge. However, at the bottom, there was no snow at all. A trip in April 2012 had a snow plug, and I'm certain I saw one down there in June 2011 but don't have a write-up to check. On one occasion I visited outside winter it was at least a metre deep, judging by the mini-crevasses worn by water-drips. Some thought the direction of the prevailing winds may have an impact on whether the plug forms or not.

Thanks again, folks.

A good picture of the snow from June 2011 is here: http://www.flickr.com/photos/steve-sharp/4727701813/#in/photostream/

There's little doubt that the direction of the wind plays a large part in the gathering in the hole. For my part I think that anything from the east (particularly NE) is likely to aid accumulation. This is backed up by 2010's remnant, which lasted until winter of 2010-2011.

If anyone's got any contacts who are likely to be down there any time soon, please tell them to post up on here!

Iain

Should be popping down tomorrow depending upon how lazy we're feeling!

zomjon said:

Should be popping down tomorrow depending upon how lazy we're feeling!

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Would really appreciate a picture or two!

Thanks,

Iain
iainjamescameron@hotmail.com

Wow - that's the one! Thanks for digging that out - I was beginning to think I'd imagined it being June! The other image next to it is equally great:

http://www.flickr.com/photos/steve-sharp/4727699817/#in/photostream/

Bump! Anyone been down Eldon Hole, or know of anyone who has? I'm wondering if the snow is still persisting.

Hi I'm afraid that my trip was three weeks back now and I forgot the camera and spade. Kicked my way down for about a metre before giving up and back up the rope - guess the plug would have gone down at least another metre into the hole.

Some friends of mine went down last week and could not get into the chamber as it was blocked by the snow.

My experience of snow pluged potholes has been limited to August in the Haut Jura. 

As regards semi-perennial snowfields in the UK, a very accessible summary was given in the opening chapter of M.Moran "Scotland's Winter Mountains: the challenge and the skills", David & Cgarles, Newton Abbot, 1988. It states that one researcher considered that at Braeriach in the Cairngorms "a tiny ephemeral corrie glacier may have subsisted there as late as 1810", and Moran states it is "the most likely spot in Britain for glacier regeneration" but pessimistically states that if present warming trends continue "Scotland's mountain winter would be but a fond memory in a hundred years' time". More encouragingly for climbers of the future he also states that as the climatic optimum of the present interglacial occurred 6,000 years ago, it may "be more correct to  regard Scotland's present semi-permanent  snowbeds as ahrbingers of the next glaciation than the lingering relics of the last Ice Age."  8)

All well known to ronofcam through academic articles  , I'm sure, but Moran's popular account may be of interest to cavers who go hill walking.

Moran does have gentle dig at researchers such as ronofcam: "The few dirty patches of near-perennial snow have roused a volume of research and emotion out of all proportion to their extent or scenic significance."  :

And in lighter vein, G.J.Dutton's second hilarious accounts of climbing and walking misadventures in Scotland (G.J.Dutton "Nothing do simple as climbing: more stories of the Doctor and his friends among the long suffering Highlands", Diadem Books, London, 1993) includes "Beating the recession", originally published in the "Scottish Mountaineering Club Journal". Its a just-plausible account off one man's attempt to assist a semi-perennial snowfield to persist and grow from one winter to the next in a large scale experiment to create Scotland's first glacier in some hundreds of years...