Drawing in the sand at the beach? Our ancestors did the same 140,000 years ago
This ammoglyph consists of a circular groove, a central depression and two possible knee impressions. Credit: Charles Helm
The urge to draw images in sand, or create sand sculptures, seems to be irresistible, as a walk on many a modern beach or dune surface will show. Sand is a vast canvas—and may have been used as one for far longer than people realize.
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