People reach the Americas
Across Beringia to the last unpeopled continent
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Beringia was not a narrow bridge but a grassland a thousand kilometres wide, where the population was probably isolated for thousands of years before spreading on. Monte Verde in Chile, dated to around 14,500 years, showed that a Pacific coastal route must have been in use before the ice-free inland corridor opened. The arrival coincides with the disappearance of much of the Americas' megafauna — mammoths, giant ground sloths, horses.
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During the ice age so much water was locked up in ice that the sea fell, leaving dry land between Siberia and Alaska. People followed the animals across. In under two thousand years their descendants had reached the southern tip of South America.
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Part of Terra Saga — the story of Earth on a timeline. terrasaga.org