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Los Valles de Omaña y Luna Biosphere Reserve, Spain


The Region of Valles de Luna y Omaña is located in the north-west of the León Province in northern Spain, including the municipalities of Sena de Luna, Barrios de Luna, Soto y Amío, Murias de Paredes, Riello and Valdesamario. Altitudes of over 2,000 metres are reached in the south-west, in the mountainous complex of Sierra de la Cañada. Omaña is surrounded by mountain chains, which constitute the contact between the Cantabrian mountain range and the Montes de León. The region includes the Luna y Omaña Rivers that give rise to a succession of fertile valleys and narrow passages.

Designation date: 2005


Regional network:  EuroMAB and IberoMAB

Ecosystem-based network: Global Change in Mountain Regions (GLOCHAMORE) and Global and Climate Change in Mountain Sites (GLOCHAMOST)




    Surface : 81,159.30 ha

    • Core area(s): 15,754 ha
    • Buffer zone(s): 60,041.50 ha
    • Transition zone(s): 5,363.73

    Location: N/A

    Administrative Authorities 

    Ayuntamiento de Murias de Paredes

    Manuel Rodríguez Diez 
    San Juan, 8
    24121 Riello, León

    Tel.: +34 987 593007
    Email: N/A

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    Ecological Characteristics

    The regions of Omaña and Luna are the result of a farm system that was basically established during the Middle Ages and continued to be operational until the middle of last century. This system included, associated to each inhabited nucleus, land allocated to grasslands, woods to supply timber and croplands.

    The high mountain landscapes in the extreme north, west and south of the Reserve are note worthy because of their high ecological value, in addition to the landscapes modelled by human and livestock activities, scattered all over Omaña.

    The Reserve harbours a good number of singular species of fauna and for some this is the limit of their southern distribution. Thus we find seriously endangered species such as the Brown Bear and the Western Capercaillie and species endemicto Cantabria such as the Broom Hare or endemic to Spain, such as the Iberian Desman, in addition to very singular species such as the Grey Partridge, the Wolf and large populations of Trout, with very specific characteristics adapted to mountain water courses.

    In general the bird, mammal, amphibian and reptile communities are widely and richly represented.

    The zone has considerable and interesting flora, with numerous species endemic to the Iberian Peninsula. It conserves samples of deciduous and marcescent forests in excellent condition.

    To be noted are the Birch groves, considered to be unique in the Iberian Peninsula, the vast Quercus Pyrenaica groves and the presence of clumps of another recently described (2002) species of Oak (Quercusorocantabrica). Also of interest are the riparian forests, combined with traditional agro-systems in a mosaic of outstanding landscape and cultural value.

    Socio-Economic Characteristics

    One of the main sources of economic development in the region is open range livestock-raising, together with domestic agriculture and incipient tourist activities.







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    Last updated: February 2019