... a Scotsman drops a penny down a rabbit hole?

[url=http://www.dailymail.co.uk/sciencetech/article-1081666/Dont-look-Climbers-explore-murky-abyss-3-100ft-deep-underground-shaft-China.html]here[/url ]

when I first saw that I thought it was a paintshop job but looking on the web there's some quite amazing looking things




The Ellison's Cave, located in the northwest Georgia, is one of the most spectacular caves of the world. With a depth of 1,063 feet and a length of 64,030 feet, Ellison's Cave in Walker County is the twelfth deepest and fifty-second longest cave in the United States. The two deepest cave drops in the continental United States occur in Ellison's Cave: "Fantastic," which drops 586 feet, and "Incredible," which drops 440 feet. The following pictures are of the Fantastic Pit.



[Edited on 31/10/08 by Mr Whippy]

one on mars too linky

I've been caving in Gunung Mulu (Sarawak - Borneo) which still has the largest (by volume) cave chambers in the world. Certainly one of the most amazing experiences I've ever had - nearly 20 years ago now.

The largest one was a 2 hour walk from the camp, then another hour in the dark and wet climbing along honeycomb rock walls till you got to it. But of course then you couldn't really see how big it was as the lamps didn't shine far enough. But it's big, the area of 11 wembley pictches and around 300m high (at that time they hadn't even accurately measured it).

This is one of the smaller caves (Deer Cave):

[Edited on 31/10/08 by Jasper]
Rescued attachment GunungMulu.jpg

great photo. is that the M25 running inside it?

Might as well be, it f** ing huge.... not my picture though - they're all at home in boxes .... pre-digital days....

supermans home!







linky

[Edited on 31/10/08 by Mr Whippy]