Best mountain peaks in Las Ubiñas-La Mesa Natural Park, a UNESCO Biosphere Reserve in Asturias, Spain, features dramatic mountainous landscapes and rich biodiversity. The park is characterized by high, bare peaks sculpted by glaciers, dense forests, and valleys with traditional villages. It is home to a wide array of Cantabrian fauna and diverse flora, including extensive beech, oak, and birch forests. The area also holds cultural heritage shaped by centuries of livestock farming, with traditional Asturian mountain architecture and ancient…
Last updated: July 1, 2026
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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.
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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.
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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.
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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.
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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.
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Apart from being one of the most emblematic mountains of the Natural Park, it is also one of the Sierra Gabuxeo as a whole.
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Mountain pass that is almost 1,600 meters high and has spectacular views of the Volant mountains.
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The park is home to over 30 peaks exceeding 2,000 meters. Among the most prominent are Peña Ubiña, the highest and most iconic peak, and the Pico del Fontán (Fontán Norte and Fontán Sur), which some sources consider slightly higher than Peña Ubiña. Other notable summits include Peña Rueda, known for its pyramid shape, and the peaks within the Huertos del Diablo area.
The peaks in Las Ubiñas-La Mesa are characterized by their dramatic limestone formations, sculpted by ancient glaciers, offering spectacular scenery. The park's high state of conservation also means you can experience rich biodiversity, including Cantabrian fauna like brown bears and golden eagles, alongside diverse flora such as extensive beech and oak forests. The area also holds significant cultural heritage from centuries of livestock farming.
From the summits, you can expect breathtaking panoramic views of the surrounding mountainous landscapes, including extensive, rounded pastures and immense limestone walls. For instance, Cueto Negro Summit is praised by visitors for its stunning views in all directions. From Ventana Pass, you can enjoy a magnificent vista of the San Emiliano Valley, also known as Babia de Yuso.
Peña Ubiña, standing at 2,414 meters, is the highest and most emblematic mountain within the park and the second highest in Asturias. Located on the border between Asturias and León, this massive limestone peak has historically guided shepherds. Its ascent is challenging but offers a profound sense of accomplishment and incredible views, making it a highly rewarding experience for mountaineers.
La Cubilla Pass is a significant mountain pass that marks the border between Asturias and Castilla y León. It is well-regarded for its magnificent landscapes and is part of the TransCantábrica BTT route, making it a popular spot for cyclists. While long, its slopes are not overly steep, offering an enjoyable ride through beautiful scenery.
Yes, Ventana Pass is an exceptional viewpoint located at 1,587 meters in the Cantabrian Mountains. It connects San Emiliano in León with Teverga in Asturias and provides breathtaking views of the San Emiliano Valley. It's a must-visit if you are in the area.
The region offers a wide array of outdoor activities. You can explore various cycling routes, including road cycling and gravel biking, with routes like the La Cubilla Pass loop. For mountain biking enthusiasts, there are challenging MTB trails such as the Ventana Pass and Senda del Oso Loop. The park also offers numerous hiking opportunities, from moderate excursions to challenging ascents.
The best time to visit for hiking generally depends on the specific trails and your experience level. Spring and autumn offer pleasant temperatures and vibrant landscapes. Summer is also popular, especially for higher altitude trails. Winter can be challenging due to snow and ice, requiring specialized equipment and experience, particularly for the highest peaks.
Absolutely. Peña Ubiña is considered a challenging ascent, rewarding climbers with a profound sense of accomplishment. The Pico del Fontán peaks also offer similar impressive limestone morphology and high-mountain scenery suitable for experienced mountaineers. The area around Cuitu Negru summit also features challenging terrain, including steep ramps.
Beyond the dramatic peaks, the park showcases intense glacial modeling, particularly evident in the Ports of Agüeria. You'll find dense forests of beech, oak, and birch, alongside rare flora like the Asturian daffodil. The region is also a haven for Cantabrian fauna, including brown bears, golden eagles, Egyptian vultures, otters, and desmans, making it a rich area for nature observation.
Yes, the area boasts a rich cultural heritage shaped by centuries of livestock farming. Visitors can explore traditional Asturian mountain architecture in local villages. Additionally, ancient Roman roads such as the Camino Real de la Mesa and Vía Carisa traverse the region, offering a glimpse into its historical significance.
Visitors frequently highlight the spectacular scenery and the sense of accomplishment gained from reaching the summits. The challenging climbs and the incredible panoramic views are often cited as highly rewarding experiences. The rich biodiversity and the opportunity to immerse oneself in nature are also major draws for those exploring the park's peaks.


See even more amazing summits in Las Ubiñas-La Mesa with these guides: