Hells Hole is a point of interest, located at Punt Road, Caveton SA 5291, Australia. They can be contacted via phone at +61 8 8204 1910, visit their website www.mountgambierpoint.com.au for more detailed information.
Isolated and incredible
I don't know what's beneath the water but the sign says something about diving. Otherwise, very unremarkable.
Cool place to visit.