The municipality is situated in the interior of the eastern region of Asturias, bordered on the south by the Galician province of Lugo, on the north by the Asturian municipalities of Santa Eulalia de Oscos, San Martín de Oscos, Pesoz and Allande. The village has an ethnographic museum which occupies the former governing house of Grandas. Geologically, the region is dominated by deposits of shale and quartzite.