The Úrbel and Ubierna rivers at the edge of the sierra Nature · Montorio, Odra-Pisuerga, Burgos Image of Montorio, not of the place itself. The village sits at 944 metres in the transition between the last foothills of the Cantabrian range and the depression of the Duero. The rivers Úrbel and Ubierna drain a municipal district included in the Geopark of Las Loras. Photo: Eltitomac (CC BY-SA 3.0) What to see and do in Montorio