Ceremonial Plaza and the unique elliptical structure of the Temple of the Sun, which exhibits classic Inca mortar-less stonework, at Ecuador's most important Inca site, Ingapirca, Canar Province, Southern Highlands, Ecuador, South America

Ceremonial Plaza and the unique elliptical structure of the Temple of the Sun, which exhibits classic Inca mortar-less stonework, at Ecuador's most important Inca site, Ingapirca, Canar Province, Southern Highlands, Ecuador, South America

The Temple of the Sun, showing classic Inca mortar-less stonework and a trapezoidal doorway, at the most important Inca site in Ecuador, at elevation of 3230m, Ingapirca, Canar Province, Southern Highlands, Ecuador, South America

Temple of the Sun, Ingapirca Ruins, Ingapirca, Canar Province, Ecuador, South America

Ingapirca Ruins, Ingapirca, Canar Province, Ecuador, South America

Temple of the Sun, Ingapirca Ruins, Ingapirca, Canar Province, Ecuador, South America

Temple of the Sun, Ingapirca Ruins, Ingapirca, Canar Province, Ecuador, South America

Ingapirca Ruins, Ingapirca, Canar Province, Ecuador, South America

Rock with holes of uncertain use at the most important Inca site in Ecuador, elevation 3230m, Ingapirca, Canar Province, Southern Highlands, Ecuador, South America