I am used to the U.S. where we have tons of annoying things like waivers and regulations to keep you safe. Haha. This really was adventurous. There were quite a few times where my heart was really pumping (navigating the slippery cliff side with a 6 or 7 meter drop below me). Maybe I'm just getting old though, because there were large groups of all ages and sizes doing the same thing with no problems! Haha. I did the full cave connection and be warned...get a REAL certified guide. We found one on the street who charged us EACH 800. It was supposed to be 800 total. He did know what he was doing, though. You will get wet. Shorts are recommended (not jeans). I will never forget this experience.