Stretching all the way to the south, Collado de Asón Natural Park brings together in one area most of what Cantabria has to offer in terms of nature: it is part of the communal territory of Soba, about 40 mi from Santander, and is populated by characteristic wildlife consisting of birds, reptiles, amphibians, bats, troglobites and mammals, among which are fawns, wild boars, as well as other species typical of the region. This park also has a major network of underground galleries, which are the habitat of numerous species. When wide enough, they are actually used for potholing. A great variety of flowers and forests, with different types of trees, make up this massif. The Asón river and the ice age, which was particularly harsh in this area, created a panorama that is not to be missed and that should be visited in a state of tranquillity. Moreover, the outskirts of the park give you the possibility to visit age-old villages and learn about traditional lifestyles.