The gorge creates the natural border between the provinces of Cantabria and Asturias.
It is part of the Liébana region, which is designated as a site of European Community importance.
The limestone walls are host to over 300 established sport climbing routes.
The narrowest part of the gorge is known as 'La Hermida' village, which sits directly in the shadow of the cliff faces.
Historical remains of the ancient Santa María de Lebeña church are located in the vicinity, dating back to the 10th century.
The road through the gorge is considered one of the most scenic driving routes in Northern Spain.
The Deva River, which runs through the gorge, is protected as a salmon-fishing river.
Desfiladero de La Hermida is a 21-kilometer-long limestone gorge carved by the Deva River, serving as the primary natural gateway to the Picos de Europa National Park from the Cantabrian coast. The gorge features vertical rock walls reaching heights of up to 600 meters, narrowing significantly in sections to create a deep, dramatic passage. It functions as the main transit corridor along the N-621 road between Unquera and Potes. The area is highly regarded for its technical rock climbing routes on high-grade limestone. Wildlife in the region includes populations of griffon vultures, golden eagles, and chamois. The gorge's distinct microclimate supports a variety of flora ranging from Mediterranean species at the entrance to Atlantic forest vegetation. Several viewpoints along the route provide access to the river valley vistas. It is the longest gorge in Spain in terms of continuous limestone walls.
The Mirador de Santa Catalina, which offers an elevated perspective overlooking the gorge.
Pull over only at marked viewpoints to avoid blocking the narrow, winding N-621 road.
Bring binoculars if you wish to observe the raptors nesting in the high cliff walls.
Check local weather conditions before entering, as heavy rain can occasionally trigger rockfall warnings.
Attempting to photograph from the side of the road in blind curves; use designated parking areas only.
Avoid excessive noise to protect local wildlife, and stay on marked trails to prevent erosion and disturbance to climbing areas.
