Cavern Sinkhole Cave Penetration
A cavern is a body of water no deeper then 20 metres with walls of the cavern not restricting a divers ability to ascend directly to the surface, With all sections large enough to allow two divers to swim side by side and turn around.
Cavern diving is the entry level qualification for 'Cave Diving'.
A cave site is one where there may be dark areas (ie no natural light) or areas of silt. A diver can travel away from a direct access to the surface to a distance using one third of the available air supply. Again all sections must allow two divers to swim side by side and turn around.
For more on Cave Diving look at the report on the Cronulla Dive Centre's "Limestone Cowboys" or try the CDAA's home page. If you'r interested in any more info or training contact me at the shop or eMail.