A recent survey in the Ingenio Valley provides new insight into the nature of the Middle Horizon on the south coast of Peru. A reconsideration of the Tres Palos I and II sites could provide a new perspective on Wari expansion into the region.

Early Spaniards reported that the Inka state organized public celebrations involving extravagant banquets and drinking, in addition to singing and dancing. Cieza de León and Cobo noted that large number of llamas were slaughtered for such special celebrations. Although it is understood that food was an integral part of the festivities and that the Inka state used food as a political tool, until recently the meal preparation details for such large gatherings remained unknown. Recent archaeological excavation at Tambo Viejo revealed the presence of earthen ovens, similar in fashion to contemporary pachamanka, that were used for cooking at Inka state public celebrations.

We recently conducted excavations at the Inka administrative center of Tambo Viejo in the Acari Valley of the Peruvian south coast. Our excavation of two centrally located structures demonstrates that, despite the apparent brief occupation of the site, there was substantial rebuilding as older structures were demolished and replaced by new ones. The final layout of Tambo Viejo had been preceded by continuous modifications. Furthermore, the establishment of Tambo Viejo was accompanied by ritual activities comprising the burial of sacrificial offerings such as plants and animals.