My wife and i did this tour about 5 years ago. It sounded exciting, so we booked it and showed up expecting to walk around some caves. We were wearing shorts which was not a good choice. Make sure you wear pants, as you will be crawling through small crevices and crossing streams. We ended our tour about an hour early when we got to the worm hole (I think it was called) and you had to pull yourself through using your toes and fingers. I did enjoy some of the more open areas, but it was just to enclosed and tight for my wife and I to enjoy.