The cave has been cut by an underground river which still flows through it today. There are a good variety of cave formations (speleothems) including what is claimed to be the the largest shawl formation in the world.
When I was last there one cave spider was pointed out to me although it was in a crevice so it wasn't easy to see and was impossible to photograph. Easier to see were the threads from Glow Worms, Arachnocampa tasmaniensis, hanging from above. Other wildlife that has been seen within the cave includes the platypus and the Tasmanian Giant Freshwater Crayfish, Astacopsis gouldi (the worlds largest freshwater invertebrate).
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