And more than two million years ago, hominins were using crude stone tools in Tanzania's Olduvai Gorge, one of the world's ...

And more than two million years ago, hominins were using crude stone tools in Tanzania’s Olduvai Gorge, one of the world’s most important prehistoric sites. But there were no known examples of ...

And more than 2 million years ago, hominins were using crude stone tools in Tanzania's Olduvai Gorge, one of the world's most important prehistoric sites. But there were no known examples of anyone ...

And more than two million years ago, hominins were using crude stone tools in Tanzania’s Olduvai Gorge, one of the world’s most important prehistoric sites. A person on Tuesday walks past a metal gear ...

And more than two million years ago, hominins were using crude stone tools in Tanzania's Olduvai Gorge, one of the world's most important prehistoric sites. But there were no known examples of anyone ...

And more than two million years ago, hominins were using crude stone tools in Tanzania’s Olduvai Gorge, one of the world’s most important prehistoric sites. But there were no known examples of ...