9.8742°S, 76.8158°W.
Huanuco Pampa is an Inca administrative city in the highlands of central Peru at 3,800 metres elevation, established in the second half of the 15th century after the conquest of the Chupachu and Wamali peoples. The planned city covers approximately 2 square kilometres and is centered on a vast plaza some 540 metres long containing the imperial Ushnu — a stone platform 4 metres high and 32 by 48 metres in plan. The city contains roughly 4,000 buildings organized in functional sectors: an elite ceremonial precinct, residential compounds, ceramic and textile production zones, and a complex of 497 cylindrical and rectangular storage qollqas on the adjacent hillside, capable of holding more than 38,000 cubic metres of food. Craig Morris and Donald Thompson conducted systematic excavation and survey in the 1970s for the American Museum of Natural History.
The Ushnu platform stones remain in place at the centre of the empty plain, the surrounding qollqa foundations lined up in disciplined rows.