One of the earliest sites showing Aboriginal occupation of northwestern Australia — dating to some 50,000 years ago — has been discovered at the Drysdale River catchment in the Kimberley region of Australia. They also found evidence of an early ax production industry at the Minjiwarra site, which had previously been interpreted as a dune feature indicating a break in Aboriginal occupation.
The “dune feature” is actually a sedimentary flood feature which built up over 50,000 years. It preserves early, intermediate and more recent occupation by Aboriginal people. Minjiwarra was settled even through the peak of the Ice Age 19,000 years ago, when environmental conditions were especially cold and dry.
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