Inca ruins at Pisac a stone fortress, part of the defensive walls that surround the hilltop site, Cuzco area, Highlands, Peru

agriculture valley urubamba river urubamba travel destination tourism destination terraces terraced stone south america site sacred valley rural ruins ruin river prehispanic precolumbian pisac peruvian peru latin america landscape landmark incan inca historic hilltop hillside highland fortress field famous place defensive cuzco archaeological site architecture andes mountains