The issue of late Huaracane contemporaneity with Wari and Tiwanaku colonies in Moquegua valley has been particularly vexing for researchers. No currently published radiocarbon dates can confirm that Huaracane settlements in the valley were occupied after AD 340. Yet until recently, no dates were taken from domestic contexts. During the 2006 field season, eight new radiocarbon dates were taken from the Huaracane settlement of Yahuay Alta. The contexts for these dates and how they fit within the established regional chronology will be discussed. This research represents an important step towards understanding the relationship between indigenous Huaracane agriculturalists and Middle Horizon colonists.Key words: Moquegua valley, Huaracane, Formative period, Middle Horizon, radiocarbon dates.
La problemática del asentamiento de Huaracane tardío, contemporáneo con colonias de Wari y Tiwanaku en el valle medio de Moquegua ha sido particularmente molesto para los investigadores. Ninguna de las fechas de radiocarbono publicadas actualmente han confirmado que los asentamientos Huaracane en el valle fueron ocupadas después de los 340 d.C. Aun hasta hace