Googling lacrosse helmet.....I'm seeing them starting at around $100 and going up from there. I'm sure they would work OK for caving. They
are meant to protect you from players swinging sticks around the old noggin. I would think the full face guard would be a little annoying, but maybe you can take that off. They remind me of a hockey goalie helmet. I'd say it's a little over kill for caving. I've caved in a moto cross helmet before.
You see people in construction helmets all the time. They are about as cheesy as it gets. At least your thinking of wearing a helmet.
I think you could find a caving helmet cheaper, and it would be more comfortable. They are made to hold headlights on them, same as most climbing helmets do. Caves tend to scratch the hell out of a helmet. That might be a deciding factor if you don't want to ruin your lacrosse helmet.
Member: Colorado Madrats, SoCoMoGro,CWSG.