Killke culture
The Killke culture occupied the South American region around Cusco, Peru from 900 to 1200 AD, prior to the arrival of the Incas in the 13th century.
Killke culture flourished in highland Peru in the Late Intermediate Period around what is now Cusco. They built the massive fortress, Saksaywaman, during the 12th century. Later, the fortress was used by the Inca, following their occupation of the region.