Kilby Sinkhole
Kilby Sinkhole is a natural wonder located in the Limestone Coast region of South Australia, near the town of Mount Gambier. It is a collapsed limestone cave that forms a deep, circular crater filled with crystal clear water.
The sinkhole is approximately 50 metres wide and 70 metres deep, and its water is known for its intense blue color. The water is so clear that visitors can see straight down to the bottom, which is covered in a layer of fallen rocks and vegetation.
