Cheers hiho,
Aye Twas me n Bivibabe. Muggles indeed.. lol The chances of people bumping into them are quite high, as the site is used by schools and other organisations to explore, thus the preprepared points in the rock for abseiling down. A good bunch of people they were too, although having read the, disappointedly cached, logs, I recall no mention of any books to sign at the time.. lol
If anyone is in ther region of Loch Ech, I fully recommend a trip to the caves, if you like caves, hiking or the likes, no need for climbing gear if you don't want to, as it's fairly easy to climb down, but a certain level of fitness and flexibility is certainly needed though.