Natural monuments in Las Ubiñas-La Mesa are found within a UNESCO Biosphere Reserve in south-central Asturias, Spain. This region features high mountains, gorges, forests, and pastures, shaped by complex topography and geological diversity, including significant karst and glacial landscapes. The park showcases rich geological and ecological diversity, making it a notable area for natural exploration.
Last updated: June 27, 2026
Highlight • Mountain Pass
Translated by Google •
Tip by
Highlight • Cave
Translated by Google •
Tip by
Sign up now to discover places like this
Get recommendations on the best single tracks, peaks, & plenty of other exciting outdoor places.
Sign up for free
Highlight • Mountain Pass
Translated by Google •
Tip by
Highlight • Cycleway
Translated by Google •
Tip by
Highlight (Segment) • Trail
Tip by
Sign up for free to discover even more natural monuments in Las Ubiñas-La Mesa.
Sign up for free
Already have an account?
Start today with a free account
Your next adventure awaits.
Login or Signup
Popular around Las Ubiñas-La Mesa
Upon reaching the summit, you don't arrive at a village or a tourist center, but rather at a kind of natural balcony overlooking the Lena mountain passes, which gives a strange feeling, as if you've stepped onto an empty stage. And on clear days, the wind is louder among the mountain passes than any car, because traffic is minimal.
0
0
For decades, La Cubilla was practically a ghost town: a road built to connect mining valleys, used more by livestock farmers and scattered trucks than by travelers. This lack of traffic left a remarkably clean route, free of curves, absurd straights, and modern widenings: pure mountain design from another era. That's why many cyclists say it "looks more like an Alpine pass than a Cantabrian one," with those giant limestone walls silently accompanying you.
0
0
The La Cubilla mountain pass is located at an altitude of 1,683 meters, on the border between Asturias and León. Its rugged terrain and the beauty of its surroundings have earned it the title of stage finisher of the Vuelta a España, making it one of the most iconic climbs among cyclists.
0
0
Puerto de Ventana is a mountain pass located in the Cantabrian Mountains, between the Principality of Asturias and the province of León. It lies at an altitude of 1,587 meters and connects the municipality of San Emiliano in León with the Asturian municipality of Teverga. From the pass, you can enjoy a breathtaking view of the San Emiliano Valley, known as Babia de Yuso.
2
0
The Teverga Gorges are an impressive part of the Senda del Oso, a very popular hiking and cycling route in Asturias. This trail follows the route of an old mining railway and crosses the Valles del Oso, which include the municipalities of Quirós, Santo Adriano, Proaza and Teverga.
2
0
This cycle path is part of Spain's greenways, which restore old abandoned railways. The route passes through tunnels, bridges and breathtaking canyons!
0
0
The Puerto de la Cubilla is a mountain pass on the border between the Principality of Asturias and the community of Castilla y León. By MTB you can get there from San Emiliano (ten kilometers and 500 meters of positive gradient) or from Caldas de Luna (17 kilometers and 730 meters of positive gradient). It is part of the TransCantábrica BTT route.
2
0
One of the most beautiful pedestrian paths in this area of the Río Teverga as it is surrounded by large walls where people are often found climbing!
0
1
Among the most popular natural monuments in the region are La Cubilla Pass, known for its long ascent and panoramic views, and Ricabo Track, a scenic gravel road through forests. Another significant site is Huerta Cave, one of Asturias' largest cave systems.
The natural monuments in Las Ubiñas-La Mesa are unique due to the region's rich geological and ecological diversity. The area is characterized by high mountains, gorges, forests, and pastures, resulting from complex topography and significant karst and glacial landscapes. This creates impressive formations like extensive cave systems and unique mountain passes.
Yes, Cueva Huerta offers guided tours along a wooden walkway, making it accessible for various visitors, including families. Additionally, the Bear Trail (Senda del Oso) is a family-friendly cycle path that passes through impressive gorges near the natural monuments.
The natural monuments and surrounding areas are home to diverse wildlife. Cueva Huerta is notable for hosting significant hibernating colonies of cave bats. In the Puertos de Marabio area, you might observe mountain passerine birds like the wallcreeper and red-rock thrush, as well as large raptors such as the golden eagle, Egyptian vulture, and griffon vulture.
The park is renowned for its significant karst formations, including extensive cave systems like Cueva Huerta and the numerous dolines and blind valleys of Puertos de Marabio. You'll also find high mountains, deep gorges, and scenic mountain passes such as Ventana Pass.
Yes, the PR-AS 72 "Ruta del Puerto de Marabio" offers a low-difficulty, pleasant walk through the unique karst landscape of Puertos de Marabio. This trail allows visitors to experience the area's ecosystems without requiring advanced hiking skills.
The region offers various outdoor activities. You can explore gravel biking routes like the "Gravel tour to the Natural Park of Las Ubiñas-La Mesa along the Senda del Oso (Bear Trail)" or road cycling routes such as the "San Lorenzo, Somiedo, and Ventana Passes Loop." For more details, refer to the Gravel biking in Las Ubiñas-La Mesa and Road Cycling Routes in Las Ubiñas-La Mesa guides.
While specific seasonal recommendations vary, the intermediate active level of Cueva Huerta can be dry during summer, potentially offering better accessibility for exploration. Generally, late spring to early autumn provides favorable weather for hiking and outdoor activities in this mountainous region.
The Puertos de Marabio area, while primarily known for its karst landscape, also contains small fluorite deposits that were exploited until the 1970s, adding a historical mining dimension to its natural beauty.
Excellent viewpoints can be found at mountain passes such as Ventana Pass, which offers breathtaking views of the San Emiliano Valley. La Cubilla Pass also provides magnificent landscapes of the surrounding areas.
Visitors frequently praise the stunning views from mountain passes like La Cubilla Pass and Ventana Pass. The unique geological formations, especially the extensive cave systems and karst landscapes, are also highly appreciated. Many enjoy the peaceful and scenic routes, often describing them as having 'magnificent landscapes' and 'fairytale forests'.
Yes, several cycling routes are available. The Cycling in Las Ubiñas-La Mesa guide features routes like the "Senda del Oso and Cruz de Linares Loop" and the "Puerto de Ventana and Puerto de San Lorenzo Loop," which allow you to experience the natural beauty of the region, including areas near Ventana Pass.


Extend your search for the best caves by checking out these guides of the top ones in Las Ubiñas-La Mesa: