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Caso

Top 20 Natural Monuments around Caso

Best natural monuments around Caso highlight the region's rich natural heritage in Asturias, Spain. This municipality features impressive geological formations, including karst cave systems carved by rivers and spectacular waterfalls within glacial cirques. The landscape offers diverse natural attractions, from river gorges to mountain passes, showcasing the erosive power of water and ancient forests. Visitors can explore a variety of natural wonders that define the area's unique outdoor character.

Best natural monuments around Caso

  • The most popular natural monument is…

Last updated: July 1, 2026

Les Praeres – Sierra de Peñamayor

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Known as the "wall" of Preares, this climb that gives access to the Sierra de Peñamayor awaits us with a drop of 490 m, a length of 3.8 km, an …

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Chorrón Waterfall

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An impressive waterfall and one of the most popular tourist attractions in the area. It has a drop of about 15 meters high and is surrounded by a lush natural …

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The Ojo de Buey (L'Arcón de la Finistra) is in the Peña Mea massif, in central Asturias, between the councils of Aller and Laviana. It is an impressive window of …

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Pendón River Gorges

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The Banner River is born in the Sierra de Peñamayor. Already in its upper course, at the Bridge of the Banner River, it receives the waters of the Bomalu stream.

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Sanctuary of the Virgin of the Cave

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The sanctuary is from the 16th century and is located on the outskirts of Infiesto, next to the Marea River under a huge flat and upward-sloping rock. It is a beautiful place.

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Popular around Caso

Great mountain passes of Picos de Europa on road bikes

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Great mountain passes of Picos de Europa on road bikes

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Alvaro Hernandez

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Alvaro Hernandez
September 9, 2025, Les Praeres – Sierra de Peñamayor

The Les Praeres pass, meaning "meadows" in Spanish, is a beautiful crossing point for the surrounding peaks. There's also a bar and restaurant with a mountain atmosphere. As if that weren't enough, there's a deer, rescued as a puppy by the bar's owner, who freely roams the area like a pet.

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Beautiful place, with impressive views and a bar where you can have a drink or something to eat.

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Known as the "wall" of Preares, this climb that gives access to the Sierra de Peñamayor awaits us with a drop of 490 m, a length of 3.8 km, an average slope of 12.89% to crown a altitude of 740 m. From this point we can continue along the dirt road until we reach the sign.

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The sanctuary is from the 16th century and is located on the outskirts of Infiesto, next to the Marea River under a huge flat and upward-sloping rock. It is a beautiful place.

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The Banner River is born in the Sierra de Peñamayor. Already in its upper course, at the Bridge of the Banner River, it receives the waters of the Bomalu stream.

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An impressive waterfall and one of the most popular tourist attractions in the area. It has a drop of about 15 meters high and is surrounded by a lush natural landscape, with lush forests and steep mountains. The water that falls from the waterfall forms a natural pool at the base and is a popular place to swim in summer. In its surroundings there are archaeological remains of old mining operations and other structures of historical interest.

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The Ojo de Buey (L'Arcón de la Finistra) is in the Peña Mea massif, in central Asturias, between the councils of Aller and Laviana. It is an impressive window of more than 20 meters in diameter, created by erosion of the limestone rock. It is worth seeing this tremendous hole from different angles.

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Spectacular site and increasingly crowded, so if you go for a week even more spectacular.

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Frequently Asked Questions

What types of natural monuments can I expect to see in Caso?

Caso, in Asturias, Spain, is rich in diverse natural monuments. You'll find impressive geological formations like karst cave systems carved by rivers, spectacular waterfalls within glacial cirques, and unique rock formations. The landscape also features river gorges, mountain passes, and ancient forests, showcasing the erosive power of water and the region's natural beauty.

Are there any notable waterfalls to visit in Caso?

Yes, Caso is known for its impressive waterfalls. The Chorrón Waterfall is a must-see, with a drop of about 15 meters high, surrounded by lush forests and steep mountains. It forms a natural pool at its base, popular for swimming in summer. Another spectacular waterfall is the Tabayón del Mongayu, a 60-meter high cascade accessible via a well-marked hiking trail through a stunning beech forest near Tarna.

What unique geological formations can be found in Caso?

Caso boasts several unique geological formations. The most popular is Ojo de Buey (L'Arcu de la Finiesta), Peña Mea, an impressive natural window over 20 meters in diameter, created by the erosion of limestone rock. Another fascinating formation is the Cueva Deboyu, a karst cave system approximately 200 meters long, through which the Nalón River flows, demonstrating the powerful erosive force of water.

Are there any natural monuments that offer panoramic views?

Absolutely. Les Praeres – Sierra de Peñamayor is a mountain pass known for its impressive views. It involves a challenging climb but rewards visitors with stunning vistas of the surrounding peaks. The Ojo de Buey (L'Arcu de la Finiesta), Peña Mea also offers great viewpoints from different angles of its massive natural arch.

Can I find historical or cultural sites among the natural monuments?

Yes, some natural monuments in Caso also have historical significance. The Sanctuary of the Virgin of the Cave is a 16th-century religious building located next to the Marea River, under a huge rock formation, offering a blend of natural beauty and historical architecture. Additionally, the area around Chorrón Waterfall contains archaeological remains of old mining operations.

Are there opportunities for hiking near the natural monuments in Caso?

Caso is an excellent destination for hiking. For example, accessing the Tabayón del Mongayu waterfall involves a well-marked hiking trail (PR.AS-60) through a beautiful beech forest. You can find many more options for exploring the region's natural beauty on foot. For a variety of trails, including challenging routes, explore the Running Trails around Caso guide, which also features routes suitable for hiking.

What kind of cycling routes are available around Caso's natural monuments?

Caso offers diverse cycling opportunities. For road cyclists, there are several challenging routes, such as the 'Medieval Bridge of the Dobra – Views of the Roman bridge loop from Ponga' or the 'Queen's Viewpoint – Lake Enol loop from Ponga'. If you prefer touring, you can explore routes like the 'Collada de Arnicio Loop'. You can find more details and routes in the Road Cycling Routes around Caso and Cycling around Caso guides.

What do visitors enjoy most about the natural monuments in Caso?

Visitors particularly appreciate the stunning natural beauty and the sense of adventure. The impressive geological formations like the Ojo de Buey, the powerful cascades of Chorrón Waterfall, and the challenging climbs to viewpoints like Les Praeres are frequently highlighted. The opportunity to explore ancient forests and witness the raw power of nature, such as the Nalón River flowing through Cueva Deboyu, also leaves a lasting impression.

Are there any river gorges to explore in Caso?

Yes, Caso features beautiful river gorges. The Pendón River Gorges are a notable example, where the Pendón River originates in the Sierra de Peñamayor. This area allows visitors to see the river's upper course and its confluence with the Bomalu stream, offering picturesque views and a glimpse into the region's hydrology.

Is it possible to swim in any of the natural monuments?

Yes, at the base of the Chorrón Waterfall, the falling water forms a natural pool, which is a popular spot for swimming during the summer months. It's a refreshing way to experience the natural beauty of the area.

What is the best time of year to visit the natural monuments in Caso?

The best time to visit Caso's natural monuments largely depends on your preferred activities. Spring and autumn offer pleasant temperatures for hiking and exploring the forests, with vibrant foliage in autumn. Summer is ideal for enjoying the natural pools, such as the one at Chorrón Waterfall. While some areas may be accessible in winter, conditions can be more challenging, especially at higher elevations or on trails.

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Extend your search for the best caves by checking out these guides of the top ones around Caso:

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