Cave diving is perhaps the most technically demanding exploration endeavour this side of astronautics. Australians have been active participants in aquatic cave exploration, and there are extensive and famous cave dives on the Nullarbor and at Mount Gambier, South Australia. In Tasmania, the caves are tighter, colder, and more claustrophobic, but there are wild places that nobody ever sees....except a few...

For Your Eyes Only is a highly decorated chamber in Tasmania. It is protected by a 230 metre long  waterfilled passage. The water temperature is between four and eight degrees C, visibility in the sump varies between zero and three metres, and the current can be very high.

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