I was wondering the same thing about permission. Might be good for the NSS to map it and know the layout in case someone gets lost in there and a rescue is needed. So the Sherrif might be a good approach (Skip had suggested that). Also the cave surely goes under the town, so a survey could help understand the structural considerations for building permits, underground utiliities, etc. So maybe the Town Manager or Mayor?

I'm almost done putting my harness together and will play with it in shallow water here soon. So I'm not sidemount "yet".