Amazonas before the Inca Empire
The present-day Department of Amazonas in Peru, occupying part of the western Amazon basin, carries evidence of human cultures predating the Inca Empire. The presence of the Chachapoya culture and the Wari culture in architectural excavations allow for evidence of multiple civilized presences previous to the conquest of the area by the Incan Empire. Prehistoric. Prehistoric evidence on rocky walls includes the rock paintings of Chiñuña-Yamón and Limones-Calpón in the province of Utcubamba. Some of these pictorial samples were made by people who had a hunting economy six to seven thousand years  ago. By the time the Peruvian civilization was already formed, there appeared a type of ceramic mainly identified in Bagua Province. Historic. The Wari (Huari) were present and occupants of the southern region of the modern day Amazonas Department of Peru, from A.D. 500 to A.D. 1000, around 500 years prior to the founding of the Incan Empire. Similar to the Incan Empire, the Huari also expanded across more territories than their other pre-Incan neighbors to the South, the Moche and Chimú. The Huari are theorized to be the pioneers of terrace agriculture, a farming system suited to the  topographical terrain of Peru that later would revolutionize European agriculture. The architectural remains of the Huari that date their presence in the state of Peru, pre-Incan establishment, include the Wari Complex (Huari Complex), a site of 988 acres thought to home up to 40,000 people. Near the city of Ayacucho, the site includes subterranean galleries, mausoleums of human remains, and astronomical tables. There are also many architectural remains from the Chachapoya culture, some of which are Kuelap, Gran Vilaya, Cerro Olán, Purum Llaqta, Cheto, and Gran Pajatén. All of these structures appear to be related, but their age and  order of construction are unknown.