In few places does nature manifest itself with such splendour as in the Armañón Natural Park. Between its peaks and forests stretches an infinite tangle of paths and more than two hundred caves.

Armañón is one of the natural jewels of Enkarterri. The park extends between the municipalities of Karrantza and Turtzioz and is characterised by its karst landscapes, of great ecological richness. Thanks to these stone massifs, Armañón enjoys a unique microclimate that has allowed Mediterranean oak and beech forests to grow just a few kilometres from the Cantabrian coast.

The park is an exaltation of nature. Its subsoil hides more than 200 caves, many open only to cavers due to their large extension, such as the Torca del Carlista. The best known, however, is the Pozalagua cave, which can be visited purchasing a ticket. In 2013 it was awarded as Best Corner of the Repsol Guide.

In this highly rural territory there are several breeds of native cattle easily recognizable during the visit to the surroundings of the Park: the Carranzana sheep with a blond face and the black-faced one, the villain dog of the Encartaciones or the Montina cow are just some of them.