This research aims to substantiate the politics presence of an Inca governor in the Mapocho valley through a multidisciplinary analysis aimed at the study of the Inca do-main in the area and the material and symbolic meaning of the male anthropomorphic statuette of the «orejón» found in 1988 at the top of Cerro El Plomo. The discussion focuses on the chronicle of Gerónimo de Bibar and the Letters of Pedro de Valdivia, mainly, with the objective of highlighting the Inca territorial problems and the possible urban and symbolic features in the Aconcagua and Mapocho valleys. Approaching for this from the ethnohistorical and anthropological information perspective of the materiality and symbolism of the huacas or demarcation land-marks, understood as territorial landmarks within the Inca ideology. Allowing himself to theorize about the possible character of «social huaca» of the «orejón» statuette.