Mountain range of Degaña Nature · Degaña, Narcea, Asturias It closes the municipality to the north with very evenly matched summits: Chagonacho, 1,870 metres, Grallos, 1,866, and Rubio, 1,863. Its valleys of glacial origin preserve cirques and moraines, and brown bear, roe deer and wild boar live on its sunny slopes. Photo: rutinasvarias.com (CC BY-SA 4.0) What to see and do in Degaña