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25 stone points found in South African cave

25 stone points, dating back 77,000 years, have been found in Sibudu Cave in South Africa.

The discovery is the earliest evidence on record of a technique known as “pressure flaking,” the researchers said. The technique is performed by using a pointed bone tool to remove small flakes of rock from a sharpened stone, the scientists said.

In contrast with other stone-flaking techniques, pressure flaking gives people more control over how to fashion and refine the sharp edges of a weapon, said study lead researcher Veerle Rots, a research professor at the Fund for Scientific Research at the University of Liège in Belgium.

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Story: Laura Geggel, Live Science | Photo: Rots V. et al./PLOS ONE

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