I have been questioned on my geological leanings in the past but I do know what it takes to make a cave and south jersey doesn't have it.Cave it is not,now to find out what it is???
One of my sports used to be caving (spelunking). I was a member of the Met Grotto Caving Club in NYC, and I remember going caving with them once - about 1990 - in to cave in central or southern New Jersey called Lee Cavern or Lee Cave. It was locked with a gate so people couldn't get in, but they had the key to the gate. I can't remember where it was in NJ nor can I find it online, but it was real nice big cave and we went down into it.