Chankillo Archaeoastronomical Complex

<p>The Chankillo Archaeoastronomical Complex is a prehistoric site (250-200 BC), located on the north-central coast of Peru, in the Casma Valley, comprising a set of constructions in a desert landscape that, together with natural features, functioned as a calendrical instrument, using the sun to define dates throughout the year. The site includes a triple-walled hilltop complex, known as the Fortified Temple, two building complexes called Observatory and Administrative Centre, a line of 13 cuboidal towers stretching along the ridge of a hill, and the Cerro Mucho Malo that complements the Thirt