BABAK TAFRESHI / SCIENCE PHOTO LIBRARY BABAK TAFRESHI / SCIENCE PHOTO LIBRARY
Atacama rock art in moonlight. Rock art of the Atacama people in a hollow on a cliff on a moonlit night. Carvings on rocks are known as petroglyphs, and are a form of rock art. Photographed in the Valle del Arcoiris (Rainbow Valley), Chile.
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