I've definitely been in caves where low-hanging stalactites have been ruined by handsy idiots. WTF do they think it's going to feel like? IT'S A ROCK YOU RETARD. Stop touching things and ruining them. The discoloration from it at the ruins was frustrating, but in caves you know that people are actually destroying the processes that created those beautiful formations in the first place.  Sadly this behavior isn't limited to Ameri-fats. I've seen it in other countries as well. People just climbing all over everything in a cave. Ignoring signs, ropes, chains, guides, and just doing whatever they want. I've even seen names carved in walls. People like this are the reason they just end up closing sites like that entirely. It's terribly disappointing.