Reservoir of Rioseco Nature · Sobrescobio, Nalón, Asturias Image of Sobrescobio, not of the place itself. Set downstream from Tanes and next to the municipal capital, it works as the lower reservoir of the pumped-storage station that links the two. Its shores, within the Redes natural park, are a good place for watching water birds. Photo: Grandawiki (CC BY-SA 4.0) What to see and do in Sobrescobio