May 092011
 
The Chasm in Piccaninnie Ponds

  About the dive Piccaninnie Ponds is a spectacular freshwater cave formation in South Australia, where spring water filtering up through the limestone has created beautiful formations up the walls. Normally the water is crystal clear on entry, with limitless visibility. After swimming across the First Pond and through the fringing reeds, divers descend into the canyon-like Chasm, where the Dogleg at 40m can be seen from the surface. At the far end the Chasm develops a roof to form the Cathedral. On this particular dive, I turned up at the Ponds with my parents to discover recent rainfall had led to muddy water running off the surrounding swamp and into the First Pond. Vis here was about a metre, [read more…]

Apr 302011
 
Tommy Graham's Cave Doorway

About the cave Tommy Grahams Cave is located on the Nullarbor Plain in Western Australia. A large tunnel leads down from the initial entry point, moving through a more restrictive collapse area, before opening up again. This second tunnel area has an entrance to a lower section of the cave, and also ascends to an enclosed air space. With high CO2 levels, not many divers clamber over this rockpile to reach the sump on the other side. After a brief attempt at carrying my twin 100s over, I was one of the ones who decided turning back would be more sensible. Probably the most memorable feature of this cave is the access to the water. The surface of the Nullarbor [read more…]