Cerro Llullaillaco, Argentina, 1999
Photograph by Maria Stenzel
A view from the top of Cerro Llullaillaco (Yu-YAI-ya-ko) shows the stark expanse of the Andes Mountains in western Argentina. In 1998, Llullaillaco's 22,000-foot (6,700-meter) summit yielded an Inca ruin containing dozens of artifacts and three perfectly preserved children sacrificed some 500 years ago. It still ranks as the world's highest archaeological site.
