Around 73,000 years ago, in a cave now known as Blombos, someone took a pointed lump of iron-rich rock—ochre—and dragged its tip across another rock, leaving behind a pattern of red, crosshatched ...
Archaeologists have uncovered what may be the oldest human-made drawings ever found. Discovered in a cave in South Africa, the cross-hatch pattern was drawn in red ochre and found to date back over 70 ...
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