Best caves around Merindad De Sotoscueva are concentrated within the Ojo Guareña Karstic Complex, one of Europe's largest cave systems. This region features over 110 kilometers of interconnected galleries, designated as both a Natural Monument and a Cultural Heritage Site. The subterranean landscape showcases significant geological formations, unique biodiversity, and extensive archaeological findings. Visitors can explore a variety of caves, including those with ancient human traces and rock-hewn hermitages.
Last updated: May 23, 2026
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Ideal for taking a dip on hot days!
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The Hermitage of San Bernabé is located at the main entrance to the Ojo Guareña Karst Complex and is part of the caves. It is located in the municipality of Cueva de Sotoscueva. The date of its construction is unknown; some place it between the 8th and 9th centuries, but it is also believed to date back to the 13th century. It was originally dedicated to San Tirso.
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This is the best-known image of the famous town of Puentedey.
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The hermitage of San Bernabé is located at the main entrance of the Ojo Guareña Karst Complex and is part of the caves. Located in the municipality of Cueva de Sotoscueva. The date of its construction is unknown, some place it between the 8th and 9th centuries, but it is also believed to be from the 13th century.
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Puentedey is a mandatory stop if we want to get to know one of the most beautiful towns in Las Merindades. It will be included in the list of the Most Beautiful Towns in Spain association in 2022. The enormous natural stone arch over the Nela River is its main emblem.
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Essential visit in a very pleasant environment
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The history of Puentedey begins thousands of years ago, when an enraged river decided to break through a rock, thus creating the spectacular natural bridge that today is the emblem of the town. Its magical appearance led its ancient inhabitants to name it "Bridge of God". Time has passed since then, but Puentedey is still a magical and special place, with its cobbled streets and stone houses that seem to rise from the mountain.
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Near the Argés road junction, a narrow path ascends to a beautiful hermitage, which, in addition to being used as a place of worship and housing, was used as a cemetery. Indeed, the Cueva de San Pedro is excavated in the rock on a mound on the outskirts of town.
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The Ojo Guareña Karstic Complex is the main attraction, featuring several notable sites. Among them, the Natural Rock Arch of Puentedey, where a town is built over a natural cave, is highly popular. The Hermitage of San Bernabé of Ojo Guareña offers a unique blend of natural cave and historical religious site. Cueva Palomera, a significant entrance to the Ojo Guareña system, is also a must-see for its formations and ancient rock art.
Yes, the region offers family-friendly options. The Natural Rock Arch of Puentedey is categorized as family-friendly and provides an accessible natural wonder. Exploring the general Ojo Guareña complex, particularly sections like Cueva Palomera, can also be suitable for families, offering impressive geological formations and historical insights.
The caves of the Ojo Guareña Karstic Complex are rich in history. They contain archaeological findings from the Paleolithic, Post-Paleolithic, and Bronze Age, including human remains, tools, ceramics, and ancient footprints. Cueva Palomera features rock art dating back 10,000 years, and the Hermitage of San Bernabé is a rock-hewn hermitage with historical murals from the 18th and 19th centuries.
The Ojo Guareña Karstic Complex is one of Europe's largest cave systems, formed by the erosive action of the Guareña and Trema rivers. It features over 110 kilometers of interconnected galleries across six distinct levels. You'll find extensive stalactites, stalagmites, columns, flowstones, and even a 54-meter high underground waterfall within Cueva Palomera. The complex is a testament to millions of years of geological and hydrological activity.
Beyond cave exploration, the region offers various outdoor activities. You can find numerous hiking trails, such as the moderate 'El Ventanón Trail' or the more challenging 'Sendero Cascada de la Salceda'. There are also options for mountain biking and gravel biking. For more details, explore the hiking guide, MTB trails guide, and gravel biking guide for Merindad De Sotoscueva.
Yes, guided tours are available for parts of the Ojo Guareña Karstic Complex, such as Cueva Palomera, to ensure visitor safety and preserve the delicate environment. It is advisable to check local visitor information centers or official websites for booking details and availability, especially during peak seasons.
The caves maintain a relatively constant temperature year-round, making them accessible in most seasons. However, for a comfortable overall experience, including exploring the surrounding natural monument, spring and autumn generally offer pleasant weather. Summer can also be a good time, providing a cool escape from the heat.
While the Ojo Guareña Natural Monument offers many outdoor opportunities, specific regulations apply to pets, especially within the delicate cave systems. Generally, dogs are not permitted inside the show caves to protect the environment and other visitors. For trails, policies can vary, so it's best to confirm with local park authorities regarding dog-friendly routes and leash requirements.
Inside the caves, temperatures are consistently cool, typically around 10-12°C (50-54°F), regardless of the outside weather. It's recommended to wear warm layers, sturdy closed-toe shoes with good grip, and potentially a light waterproof jacket, as some areas might be damp. Helmets are often provided or required for guided tours.
Public transport options to the more remote areas of Merindad De Sotoscueva and the Ojo Guareña Karstic Complex can be limited. While some regional bus services might connect larger towns, reaching the specific cave entrances often requires a private vehicle. It's advisable to check local bus schedules in advance or consider car rental for greater flexibility.
The Hermitage of San Pedro is a unique cave site near the Argés road junction. Excavated into the rock, it served not only as a place of worship and housing but also as a cemetery. This site offers a glimpse into the historical use of natural caves for both spiritual and practical purposes in the region.
Visitors consistently appreciate the sheer scale and natural beauty of the Ojo Guareña Karstic Complex. The blend of impressive geological formations, rich archaeological history, and unique cultural sites like the rock-hewn hermitages creates a memorable experience. The opportunity to witness ancient human traces and diverse biodiversity within these vast subterranean networks is a major draw.


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