i did not take these pictures fellow cavers have. i have only been in a few caves. the solid marble caves seem safer than other types. this cave is in ny but not far from my home. this is just a bit crazy for me. this is why you should be wary of walking on sinkholes in new england
Bounty Hunter Pioneer 505, Teknetics Gamma 6000, DetectorPro PiratePro, Fisher F-75 LTD2, Berkut-5 (a russian detector) and a good ole original Garrett Propointer that is still going strong.
Man, I could spend a week exploring down there. I have only been on 1 splunking tour and had a blast. 5 hour long tour. You are lucky to have that close to you. Phenominal pictures. Thank you for posting them.