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Koonalda Cave

Deep flint mine under the Nullarbor Plain, worked by Aboriginal people who carried fire far underground and left finger markings on the soft limestone walls. It is among the oldest documented underground mining anywhere.

Dated events and their evidence

• 20,000 BCE mainstream
  flint mining and wall markings (22,000 years ago, converted: BP minus ~2,000 = c. 20,000 BCE) source
• 17,000 BCE mainstream
  cave abandoned (19,000 years ago = c. 17,000 BCE) source

Where

31.4069° S, 129.8361° E

Sources

• https://en.wikipedia.org/wiki/Koonalda_Cave

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