Os Ancares Lucenses y Montes de Cervantes, Navia y Becerrea Biosphere Reserve

UNESCO Biosphere Reserve, inscribed 2006, in Spain. Os Ancares Lucenses e Montes de Cervantes, Navia e Becerrea Biosphere Reserve lies among the upper elevations of the Cantabrian Mountains in the north-west of Spain, in Galicia. Its isolated location limits many endemic flora and fauna species to the reserve. The site lies between the Euro-Siberian and Mediterranean biogeographic regions, which results in highly complex biodiversity. Os Ancares Lucenses forms part of the Eastern Sierras de Galicia, and its steep relief is surrounded by irregular valleys and rivers with strong currents, such as the Río Navia. The foothills of the Serra dos Ancares have a fairly regular morphology with gently undulating hills. Finally, Mustallar, 1,924 metres high, Penalonga, 1,842 metres high, and Corno Maldito, 1,847 metres high, are the highest peaks in the biosphere reserve.