The Bullón River is a short mountain river in the north of Spain that runs through Cantabria.
The Bullón River is born in Peña Labra and descends through the municipalities of Pesaguero and Cabezón de Liébana until it joins the Deva in Ojedo. The main town that crosses is Cabezón de Liébana.
The Deva River is born in Fuente Dé, passing through the municipality of Camaleño, the town of Potes, where it receives the waters of the Quiviesa River, and entering the municipality of Cillorigo, through the town of Ojedo, receives the waters of the river Bullón, to then cross the Desfiladero de la Hermida, until it joins the Cares River.
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