Pebdeh Cave located in the southern Zagros Mountains.

After waves of Homo sapiens left Africa, they left few traces of their whereabouts until they reappeared in Eurasia 20,000 years later. So where did they go in the intervening time? A study proposes that Homo sapiens outside of Africa made their home on the Persian plateau during that mysterious period.

Fossil evidence of early Homo sapiens migrations shows that members of our species moved out of Africa at least as far back as 210,000 years ago, while genetic evidence shows that a large wave of migration around 70,000 years ago was the most successful, contributing genes to all modern-day non-African people. But there is a widespread lack of Homo sapiens fossils across Eurasia between 60,000 and 45,000 years ago, prompting the researchers of the new study to investigate where modern humans went during this time.

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