Peña Ubiña Nature · San Emiliano, La Montaña de Luna, León At 2,417 metres, it is one of the highest mountains in the Cantabrian range and, together with the Fontán Sur, the leading peak of the Ubiña massif, located on the watershed between the Asturian council of Lena and the León municipality of San Emiliano, between Babia and Asturias, visible from almost every village in the municipality. In a 1992 survey by the newspaper La Nueva España among mountain people of the Principality, Peña Ubiña was considered the second most beautiful Asturian mountain, behind only the Picu Urriellu. Photo: Sethfromsomewhere (CC BY-SA 4.0) What to see and do in San Emiliano