We missed this the first time we went to Nazca. A fascinating archeological site. It is possible to do a guided tour, But if you have your own vehicle, it is just a short drive (on dusty roads) out of Nazca township. We found that the on site caretaker was very knowledgeable about the site. Cahuachi is a former pilgrimage site for the Nazca people, a sprawling complex of clay walls and pyramids preserved in the desert valley.