"There is a surprising degree of similarity in the earliest rock art found all the way from France and Spain to Indonesia and Australia. With many of the same signs appearing in such far-flung places, especially in that 30,000- to 40,000-year range"
Why did ancient humans paint the same 32 symbols in caves all over Europe?
NPR - June 7, 2017
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https://www.npr.org/transcripts/1134027564
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