Guitarrero Cave - Credit: Wikimedia Commons
Guitarrero Cave is located in the Callejón de Huaylas valley in Yungay Province, in the Ancash region of Peru. The cave stands above the Santa River and meters above sea level.Weber, George. "Guitarrero cave (Ancash, Peru)." Possible Relatives in the Americas. 11 July 2007 (retrieved 23 Feb 2010) Read more on Wikipedia
Source: en.wikipedia.org