With the island formation beginning with the mangrove formation and the sedimentation processes from fish. would this cave system be a result of that or possibly the breakdown of that? With the decrease in trees and increase in buildings on the island...is it actually possible for the caves to eventually collapse? I always thought all water on the island for anything other than cooking was rainwater. This is the first time I've ever heard that some have wells. Well...I take that back. I do remember people talking about the stinky nasty water and I guess I just assumed they had an old rusty rain barrel and needed a new one hehehehe :-) I've have lived most all of my life directly above the New Madrid Fault line in the States. Guess its never been a thought of its collapse bc North America is much wider than CC!