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Boulder TM 1219 in a wider landscape perspective. Credit: A. Rozwadowski, source: Cambridge Archaeological Journal.

Polish scientists reinterpret petroglyphs of Toro Muerto

The geometric patterns, lines and zigzags that accompany the images of dancers (danzantes) carved in the rocks of the Peruvian Toro Muerto are not snakes or lightning bolts, but a record of songs - suggest Polish scientists who analyse rock art from 2,000 years ago.