Green Waterhole Cave, Underwater cave in Tantanoola, South Australia
The Green Waterhole Cave extends 70 meters in length and 30 meters in width beneath the surface, containing a water-filled karst sinkhole formation.
Scientists first identified fossils in 1964, leading to extensive excavations by the South Australian Museum between 1968 and 1974 to study ancient remains.
The South Australian Government renamed it to Fossil Cave in 1989 to reflect its status as a significant paleontological research site.
The cave maintains restricted access, permitting only advanced-grade members of the Cave Divers Association of Australia to explore its underwater sections.
The cave contains 30-million-year-old Oligocene coralline limestone and preserves subfossil remains of extinct species dating back 15,000 to 40,000 years.
Location: South Australia
GPS coordinates: -37.73333,140.51667
Latest update: April 9, 2025 17:57
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