Olduvai Gorge

This cleft in a remote African plain cuts through deposits uniquely rich in the remains of weird animals and the tools of early men who lived from 400,000 to 15,000 years ago

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Scientific American Magazine Vol 190 Issue 1This article was originally published with the title “Olduvai Gorge” in Scientific American Magazine Vol. 190 No. 1 (), p. 66
doi:10.1038/scientificamerican0154-66