the European Union's Natura 2000 network and Special Protection Areas for the Conservation of Wild Birds. Picos de Europa National Park Muniellos Nature Reserve Fuentes del Narcea, Degaña e Ibias Natural Park Redes Natural Park Somiedo Natural Park Protected Landscape Area of Sierra del Sueve Fuentes Carrionas and Fuente Cobre-Montaña Palentina Natural Park Saja-Besaya Natural Park Collados del Asón Natural Park Ojo Guareña References Sources External links iberianature.com - English-language web site on nature in Spain and Portugal Cantabrian Institute of Biodiversity Parque Natural de Las Ubiñas-La Mesa - Reserva de la Biosfera (I) Mountain ranges of the Basque Country (autonomous community) Mountain ranges of Castile and León Mountain ranges of Cantabria Mountain ranges of Asturias Mountain ranges of Europe