Koonalda Cave

Koonalda Cave is an Aboriginal archaeological site on the Nullarbor Plain in South Australia, notable for containing the world's most impressive display of Pleistocene-era finger flutings -- engravings made by drawing fingers across soft cave surfaces. Dating estimates range from 31,000 to 15,000 years ago. The cave also served as a flint mine, with nodules traded across 3,000 km of long-distance routes. Listed as Australian National Heritage in 2014, it holds deep significance for the Mirning people.