geez, this brings back memories. Havent caved bungonia for nearly 25 yrs.
The funniest (well not if your the bunny) thing. We were climbing the cave with the Dragons Teeth. Knowing there is a sump nearby, a friend climbed feet first over a ledge, then promptly couldnt touch the ground and was in such a position that he couldnt turn his head to see where he was. Starts screaming thinking he had climbed into the sump and was about to fall 20m to his death. We came scrambling to the rescue with lights, to see him hanging 5 cm above the ground.
We think it gets dark at night, nothing like a cave to have darkness. Dark adaption mean zip when you cant see your hand 1cm in front of your face.