Stunning collection of prehistoric engravings found in Spanish cave

Summary
A close examination of a frequently visited cave wall in Spain has revealed a spectacular assembly of rock art engravings thought to be at least 19,000 years old
Description from Newscientist.
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Stunning collection of prehistoric engravings found in Spanish cave
A close examination of a frequently visited cave wall in Spain has revealed a spectacular assembly of rock art engravings thought to be at least 19,000 years old
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