Ancient town 84 km from Burgos, on the old Roman road between Clunia and Astorga, in the Cid's time leading from Penafiel to Arrueco.
The town is located where the Duero splits into the rivers Ribera and Riaza. Celto-iberians, Romans, and Arabs all occupied and left their mark on the town. Latitude: 41.69593. Longitude: -3.92664.
They went up Val de Esgueva to Penafiel, and by Roa and Arrueco, and they entered the Oak-forest of Corpes, and Pero Sanchez showed the place beside the fountain where the villainy had been committed; and they made such lamentation there as if they had seen the dames lie dead before them.