Salas is a town and concejo in the Principality of Asturias. It lies on the road from San Sebastián to Santiago de Compostela, and on a small subtributary of the river Narcea. It is bordered on the north by Valdés, Cudillero and Pravia, to south by Belmonte de Miranda, to the east by Pravia, Candamo and Grado, and to the west by Tineo and Valdés. Salas is a mountainous region in which coal-mining and agriculture are the principal industries.