He La Hermida Gorge It is the largest gorge of all Spain21 kilometers long and vertical walls that reach 600 meters high on the river Deva. This imposing geographical feature, located in the western area of Cantabria, constitutes the main access route to the Liébana valley.
Its formation is the result of millennia of fluvial erosion on the limestone of the massifcreating an ecosystem of great geological and biological value. The N-621 highway crosses this natural corridor connecting the towns of Unquera and Potes in a route of great visual beauty.
The design of the road forces vehicles to snake under large stone masses that seem to close over the watercourse. Throughout the journey, the landscape changes drasticallygoing from the coastal influence of the Cantabrian Sea to the high mountains typical of the peninsular interior, offering a unique immersive experience.

This natural space not only stands out for its size, but also for being a critical refuge for protected species of Iberian fauna. On its cliffs They inhabit colonies of griffon vultures and golden eaglesin addition to being a key point for the reintroduction of the bearded vulture in the north.
The combination of its Mediterranean microclimate at the bottom of the valley and the Atlantic climate of the peaks allows for a plant biodiversity rich in holm oaks and cork oaks.
Active tourism in the La Hermida Gorge
For those seeking an aerial perspective of the canyon, the Santa Catalina viewpoint offers the most complete panoramic view of the mountainous crevice. From this point, located on Mount Hozarco, you can appreciate the magnitude of the «scar» that the Deva River has sculpted in the earth.
In addition to landscape observation, The area is a reference for climbing and hikingwith the most famous via ferrata in the region that attracts athletes from all over the country.
The population center of La Hermida, located in the heart of the gorge, is famous for its hot springs that sprout naturally at 60 degrees. The local spa has taken advantage of these mineral-medicinal properties since the 18th century, providing a relaxing contrast to the bravery of the rocky environment.

It is common to see visitors enjoying the hot pools that emerge next to the river, integrating physical well-being with direct contact with wild nature. The historical importance of this pass is fundamental, since for centuries it was the only viable communication for the inhabitants of Liébana.
The isolation provided by the gorge allowed the preservation of traditions and a rural architecture which today are the main claim of municipalities like Potes. Exploring this territory means entering the living history of the cantabrian mountainswhere each bend in the road reveals a new layer of geological sedimentation and cultural heritage.
Curiosities and services of the natural environment
- La Bolera de los Moros is a nearby archaeological site that houses the remains of a strategic fortification from the 8th century located above the void.
- The Deva River is one of the most important salmon channels in the north, maintaining exceptional water quality that favors regulated sport fishing.
- There are marked mythological trails that combine physical exercise with wooden carvings that represent figures from the rich Cantabrian oral culture.



