I'm guessing Central New Jersey Grotto will be your best bet. There are two others in the state. Ping them all. See you underground! c/o Carolyn Psarianos 107 Limewood Drive Hamilton Square, NJ 08690-2212 (609)890-0962 kpsarianos@njirt.org www.caves.org/grotto/cnjg/
New Jersey Tri-State Spel. Society c/o Mark Gardas 218 Conklintown Road Wanaque, NJ 07465-2108 (973)551-1935 geoasys@yahoo.com
Northern New Jersey Grotto c/o Barclay Foord 1 Cutlass Road Kinnelon, NJ 07405 (973)452-4548