Italy
Fossil Cave (5L81), formerly known as The Green Waterhole, is a cave in the Limestone Coast region of south-eastern South Australia. It is located in the gazetted locality of Tantanoola about 22 kilometres (14 miles) north-west of the city of Mount Gambier, only a few metres from the Princes Highway
(Route B1) between Mount Gambier and Millicent. It is popular with cave divers and is notable for being both a unique paleontological site and the "type locality" for very rare crustaceans (syncarids - Koonunga sp.) which to date have been found only in caves and Blue Lake in the Mount Gambier region.
Listen to the audio guide for Green Waterhole Cave Free on WIP — starts by itself when you arrive, even with the screen off