Prehistoric Hominins Changed Saharan Landscape With Tool Industry of Gigantic Dimensions

The vast Messak Settafet escarpment in Libya is carpeted with stone tools: some 75 artifacts per square meter, making this the first known landscaping by hominids in the Middle and Upper Pleistocene.

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Parts of a vast escarpment in the middle of the Sahara turns out to be an artifact of a prehistoric industry: ancient hominins creating tremendous amounts of stone tools and piling up discarded ones, say...