Ubiña Massif Nature · Lena, Caudal, Asturias The second great limestone massif of the Cantabrian mountain range after the Picos de Europa, shared by the Asturian concejos of Lena, Teverga and Quirós and by the Leonese comarca of Babia; its gullies, pastures and crags close off the concejo of Lena to the south. The Asturian side forms the Las Ubiñas-La Mesa nature park, a Unesco biosphere reserve since 2012. Its forests of beech, oak and birch include, in the Puertos de Aguería, the largest holly grove in Asturias, and its wildlife includes deer, wild boar, wolf, chamois, roe deer, otter, capercaillie and brown bear. It has 58 peaks over 2,000 metres; the highest, Peña Ubiña, at 2,417 metres, gives the massif its name, along with others such as Peña Rueda and El Siete. Photo: Sitomon (CC BY-SA 2.0) What to see and do in Lena