A bit more info. "Safe cave diving" was coined by Tom Mount in 1976 as an attempt to educate divers about less dangerous ways of diving. The ICURR has a slide

A bit more info. "Safe cave diving" was coined by Tom Mount in 1976 as an attempt to educate divers about less dangerous ways of diving. The ICURR has a slide deck discussing various statistics at http://www.iucrr.org/fatalities.pdf http://www.iucrr.org/fatalities.pdf Anecdotally most of my friends that died in caves died from hypoxia caused by rebreather operation, not from the hard ceiling itself.