The Ribera del Duero is a comarca or district located at the southern tip of the province of Burgos, part of the Spanish autonomous community of Castile and León. The capital of the Ribera del Duero c

Montes de Oca is a comarca located east of the province of Burgos, in the autonomous community of Castile and León. It is bounded on the north by La Bureba, south by the Sierra de la Demanda comarca,