Tiwanaku (Tiahuanaco), an ancient ceremonial centre
Carved heads in the wall of the sunken ceremonial plaza known as “Templo Subterraneo” in Tiwanaku, an ancient city near the south shore of Lake Titicaca, once the most important political and ceremonial centre in Andean South America.
Photo by Ludo Kuipers, Wed Mar 29, 2000