Attractions and places to see around Ason include a diverse landscape characterized by mountain passes, waterfalls, and caves. The region offers numerous viewpoints providing expansive vistas of the natural surroundings. Ason is known for its geological features, including gorges and natural monuments, alongside historical sites and settlements.
Last updated: May 9, 2026
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Highlight • Waterfall
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Highlight • Viewpoint
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Highlight • Mountain Pass
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Highlight • Cave
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Nice path through lush meadows. Only animals, no people.
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Today we made the official visit to the cave, it's a pity they didn't let us take photos inside.
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Mythical place on the routes of the Collados del Asón Natural Park
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A small mountain pass in the easternmost sector of the Cordillera. At 1,316 meters above sea level, it is the third highest mountain pass in Cantabria. The port is closed very frequently in winter, especially in its Cantabrian part, being closed permanently for several months on many occasions.
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Just amazing and a ride for the whole family! It is a complex of karstic caves 12 km long with cavities of immense dimensions of up to 14 x 28 meters in some sectors. The water has been forming these incredible caves that fortunately today can be visited and explored. It is necessary to purchase tickets online, you can check here: https://cuevas.culturadecantabria.com/cullalvera-esp/
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This wonderful 700 meter long canyon is located in the heart of the Collados del Asón and is an incredible place. It will give you the feeling of smallness when walking among its immense limestone rock walls that were worn away by the glaciers that once occupied these territories.
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Ason is rich in natural beauty, featuring spectacular mountain passes like La Sía Pass, and the impressive Asón Waterfall, which is over 70 meters high and marks the source of the Asón river. You can also discover geological wonders such as the 700-meter long Canal Honda gorge, with its immense limestone rock walls, and the Cullalvera Cave.
Yes, Ason offers a variety of hiking trails. For easy walks, consider routes like the 'Cueva de Cullalvera – circular from Camping La Barguilla by the river Asón' or the 'Asón Waterfall loop from Asón'. More challenging options include 'Senda de la Dama Roja Trail' and 'Parque Natural de los Collados del Asón – circular to Canal Honda via Brenarromán'. You can find more details and routes in the Hiking around Ason guide.
For breathtaking vistas, visit Covalruyo Viewpoint, which offers impressive views of the valley and is ideal for appreciating the area's geomorphology. Another excellent spot is Covalanas Viewpoint, located next to the Covalanas car park, featuring picnic tables and panoramic views of the valley.
Yes, Ason has historical and cultural points of interest. You can visit the Church of San Pelayo and Bell Tower of Arredondo, a notable religious building and historical site. Additionally, the settlement of Ramales de la Victoria is recognized for its historical significance and also features a cave.
Absolutely! The Cullalvera Cave is a family-friendly natural monument that offers an engaging experience. The Covalanas Viewpoint is also great for families, providing facilities and picnic tables. The settlement of Ramales de la Victoria is another family-friendly option with historical significance.
The best time to visit the Asón Waterfall largely depends on recent rainfall. Its water volume varies significantly by season. To see it at its most spectacular, visit after heavy rains, typically in spring or late autumn, when the river is full. In summer, the water flow can be reduced to a minimum.
Yes, Ason offers challenging gravel biking routes. For instance, you can explore the 'La Sía Pass – Picón Blanco loop from Espinosa de los Monteros' or the 'A & C Tunnel Entrance – El Sobaco Tunnel loop from Castaño auzunea'. These routes are generally considered difficult. More options are available in the Gravel biking around Ason guide.
Visitors frequently praise the stunning natural beauty and the sense of awe inspired by the landscape. The Asón Waterfall is often described as 'spectacular' and 'incredible.' The Canal Honda gorge is noted for giving a 'feeling of smallness' when walking among its immense limestone walls. Many also appreciate the impressive views from viewpoints like Covalruyo Viewpoint.
While not widely publicized, the region's numerous viewpoints, beyond the main ones, offer unique perspectives. For instance, Alto de la Posadía is a beautiful viewpoint and mountain pass that provides a quieter experience of the natural landscape. Exploring the smaller trails in the Natural Park of the Collados del Asón can also lead to discovery.
La Sía Pass is an aesthetic mountain pass known for being quite windy, so it's advisable to wrap up well. It's also common to see cattle grazing in the area. The pass can be linked to Picón Blanco, with a paved section added in 2021.
The Canal Honda gorge is an impressive 700-meter long canyon located in the heart of the Collados del Asón. When walking through its immense limestone rock walls, you'll experience a profound sense of scale. Be prepared for an intermediate-level exploration, as the terrain can be rugged.


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