No cave is safe for OW divers. Many folks venture into Vortex's cave, back to the gate, with only OW qualifications and OW gear, and about once every five years we haul a body out. Last one was three or four years ago, so we're about time for another Darwin candidate to manage to get stuck in a side passage or run out of air too far in to swim back out. But of course many thousands make it in and out successfully for each one who doesn't, so on any given dive any given OW diver has pretty good odds of being ok.allenwrench:Is cave safe for OW divers? Can they carry lights or are lights not needed for this dive?
But the answer remains No! - it is not "safe."
Rick