What scientists found deep inside a cave challenges ideas of human evolution

from Business Insider http://ift.tt/1izbHeF

Deep inside the Rising Star cave system, 30 miles northwest of Johannesburg, South Africa, there’s a hidden chamber that’s almost impossible to reach.

To get inside, cavers and scientists crammed themselves into a crack that was just over seven inches wide. Then they had to descend 50 feet down a pitch-black chute, mostly the same size as its entrance.

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