Carvings in southern Peru may have been inspired by people singing while hallucinating

A pair of archaeologists, one with Adam Mickiewicz University in Poznań, the other with the University of Warsaw, both in Poland, has found evidence suggesting that rock carvings found in a southern part of Peru may have been inspired by people singing while consuming hallucinogenic plants. In their study, published in the Cambridge Archaeological Journal, Andrzej Rozwadowski and Janusz Wołoszyn analyzed rock carvings found in Toro Muerto.