The environmental values that define La Ubiñas-La Mesa Natural Park, also declared a Biosphere Reserve, are its biological diversity and its magnificent state of conservation.
It is home to an extraordinary biological richness, making it one of the few enclaves where it is still possible to observe the majestic brown bear. In the dense forest masses, it is possible to see capercaillies, which share their habitat with other species characteristic of these ecosystems, such as the wolf, wild boar, fox, genet, wild cat, stoat and badger.
In the high mountain areas, roe deer, red deer and chamois roam the landscapes together with large birds of prey that nest in the mountain ranges. Among these are the eagle, the vulture, the Egyptian vulture and the peregrine falcon, which soar through the skies of the region.