|Location||Nullarbor Plain, South Australia|
Thousands of square metres in the cave are covered in parallel finger-marked geometric lines and patterns, Indigenous Australian artwork which has been dated as 20,000 years old, making it older than any known prehistoric art in Europe. It is located about 97 kilometres (60 mi) north east from Eucla within the Nullarbor Wilderness Protection Area.
The cave was explored by an expedition lead by Captain J. M. Thompson in 1935. The team entered the cave by a ladder and found themselves in a chamber some 244 metres (800 ft) in circumference and walked down tunnels over 366 metres (1,200 ft) in length.
- "Koonalda Cave", Encyclopædia Britannica
- "Koonalda Cave" Australia Thru Time. Retrieved 2014-3-17.
- "Koonalda", Minnesota State University
- BLAINEY, Geoffrey, Triumph of the Nomads: A History of Aboriginal Australia, 1976, ISBN 0-87951-084-6, p.84
- "Caves and Lakes.". The Sydney Morning Herald (National Library of Australia). 20 November 1935. p. 12. Retrieved 6 June 2014.
- "Protected Areas of South Australia September (Map) 2014 Edition" (PDF). Department of Environment, Water and Natural Resources. Retrieved 15 April 2015.
- "Secrets of Koonalda Caves". South Australian Museum. 2014. Retrieved 6 June 2014.
- "National Heritage Places – Koonalda Cave". Department of the Environment (Australia). Retrieved 6 May 2015.