The Limestone Coast Is Hiding Something Most Australians Don't Know Exists

0:00 15 geographic facts about the Limestone Coast region in South Australia 0:45 Gambia limestone 1:39 stranded coastlines 2:41 South East Drainage Network 3:48 Boole and Hacks Lagoons 4:39 Coonawarra Wine Region 6:09 Victoria Fossil Cave 7:30 Robe 8:28 Beachport 9:19 Piccaninny Ponds 10:25 Umphiston sinkhole 11:44 Mount Shonk 12:40 Mount Gambier 13:42 Blue Lake I uncover the strange world hidden beneath South Australia's Limestone Coast. I explore how an ancient seafloor became limestone country, how old coastlines and drained wetlands shape the region, and why places like Boole and Hacks Lagoons, the Coonawarra Wine Region and Victoria Fossil Cave matter. I also look at Robe, Beachport, Piccaninny Ponds and the Umphiston sinkhole. I finish among volcanoes, sinkholes and groundwater, including Mount Shonk, Mount Gambier and the Blue Lake. Along the way, I show why this overlooked corner of Australia contains fossil traps, clear springs, a lake that changes colour and a city that draws its water from a volcanic crater.