A gorge of granite cut like a knife gives way to a canyon full of nature and wildlife. Its narrowness and how difficult your journey has made it a popular destination for sport lovers. Rafting, climbing and canoeing are some of the sports that are most practiced in this place. Appealing for young and old. The contact between nature and sport at full blast in this narrow valley gray. Place of Eurolimpiadas for their sections of great difficulty and intensity. Worth knowing. For those who know the Cantabrian coast will bring pleasant memories.