Wow! This looks like so much fun to me! It must have been surreal bumping into 30 kids down there though haha I would have loved to do something like this when I was younger and slimmer, I fear I have gained too much 'podge' to be able to squeeze through tight gaps now! I do however have the 4'10" tall advantage though haha great images, some really beautiful spaces in there! I may have to loose my podge and start a new hobby!