Discovered in early 2003 by max Hall of CEGSA, this cave was first dived by Rod O'Brien (SUSS) in July 2003 when 30-40m of passage was found. During the period Xmas-New Year 2003/04, David & Petra Funda (CEGSA) and Paul Hosie (WASG) explored the system and mapped over 1800m of passages.

The main passages of the cave lie on a NE/SW bearing line and a maximum penetration of 800m from the entrance can be reached to the NE. Passage development has been identified in at least four different horizontal planes (depths) as well as along the vertical fissure lines. Maximum depth in the cave is 12m. Passage dimensions vary between small phreatic windows (1m2), low flat phreatic tunnels (3m x 1.5m) and large breakdown passages (8m x 5m).

The cave is a rich fauna site with many troglobitic species seen above the water (cockroaches, centipedes, spiders). The water has troglobitic amphipods in large numbers in the entrance lake. Some specimens were collected for the WA Museum (Dr Bill Humphreys) and further work will be done on future trips to collect and identify species. The Fauna Lakes Tunnel is a large half submerged section of the cave where the dry section is draped in tree roots. Atmospheres in the dry chambers are not breathable (high CO2, possible H2S as well).