Sounds like there is a lot of tipping going on here and you don't even get credit for the tipping you already did. hmmmmph! That is a cool excursion, but I am not sure if I would like being those tight spaces. I'd have to be the last one in and the first one out. That's what I did when I went on a cave tour and it definitely eased the pain. Thanks for such a great description of the excursion so far.