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Toca da Tira Peia

Piauí rock-shelter in Brazil where stone artifacts were OSL-dated to about 22,000 years ago (Lahaye et al. 2013); some archaeologists doubt the stones are human-made rather than naturally fractured.

Dated events and their evidence

• 20,000 BCE disputed
  Third sediment layer stone artifacts dated via optically stimulated luminescence to about 22,000 years ago; Gary Haynes and Stuart Fiedel dispute a human origin for the stones, Tom Dillehay supports it source

Where

8.8089° S, 42.3544° W

Sources

• https://www.sciencenews.org/article/disputed-finds-put-humans-south-america-22000-years-ago

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