This story is insane. Basically the equivalent of flying a Cessna 172 as far out over the Pacific as possible with half a tank of gas and then trying to see how high you can climb
Your bottom time on a 160ft cave dive, with conventional open circuit, even with twin 80s is not going to be long. Add inโฆ.caves, disorienting surroundings and panic, and i can see why this happened.
Real talk, I have doveโฆ. A lot, and for what itโs worth Iโm a dive master. And I will neverโฆ.fucking EVER go cave diving. Especially at this fucking depth.