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Spain

Basque Country

Top 20 Caves in Basque Country

Caves in Basque Country offer a diverse range of natural wonders and geological formations. This region, situated on the Atlantic coast of Spain and France, features a varied landscape of mountains, valleys, and a coastline shaped by karstic processes. The area is known for its extensive underground systems, which include significant paleontological and archaeological sites. These caves provide insights into prehistoric human activity and unique geological features.

Best caves in Basque Country

  • The most popular caves is Eye of Aitzulo

Last updated: April 29, 2026

San Adrián Tunnel

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Curious formation that allows us to go from one side of the mountain to the other.
Be careful if it is wet or damp as the stones slip a lot.

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Aitzondo Waterfall

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The Aitzondo waterfall is located in the Aiako Harria natural park, at the western end of the Pyrenees. This waterfall is one of the largest in Guipuzcoa, with a drop of 140 meters that ends in a small pond.

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Los Goros Caves

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A good idea to visit them when it has rained or snowed, because of the water that forms inside and outside.

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Eye of Aitzulo

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If you climb from Araotz, follow the PR, and the climb is very easy and short.
From the cave parking lot, it's much steeper and zigzags. About 2.5 or 3 km with a lot of elevation gain.

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Peña de Ataloi

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On the coastal path of the route to the cliffs of Mount Ulia in San Sebastian we come across the Peña de Ataloi, this strange and beautiful rock formation in the shape of a cave that melts in your hands.

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Abaro Tunnel

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Like the Baltzola caves, it is now prohibited to cross them, due to the danger of Q fever.

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Kortezubi is a municipality that preserves an extensive landscape, ecological and cultural heritage. It was chosen by our ancestors as a home and residence in prehistoric times, undoubtedly attracted by …

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Valley of Colors (Valle de los Colores)

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The Valley of Colors is an authentic open-air museum, where you will discover the magic that erosion can create over millions of years.
In this magical place, you can enjoy numerous geoforms and a variety of colors in the rocks.

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Mairulegorreta

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Impress the entrance of the cave

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Muganix Summit (758 m)

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One of the peaks of Peñas de Aia is home to the Junkal cave, a cavity that is the object of mountain celebrations.

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Tips from the Community

Javi
March 8, 2026, Ojo de Aitzulo

Beautiful route and spectacular views

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A beautiful set of caves that, very rarely, have a waterfall with water.

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Lea
September 29, 2025, Peña de Ataloi

The path branches off from the main trail and is unfortunately now completely overgrown.

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Mtoy
September 7, 2025, Aitzondo Waterfall

Access to the foot of the waterfall is dangerous and from the path, you can't see much ☹️

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If you climb from Araotz, follow the PR, and the climb is very easy and short. From the cave parking lot, it's much steeper and zigzags. About 2.5 or 3 km with a lot of elevation gain.

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Ideal for taking a break

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This stop along the way is always worth it.

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This time I went about 100-200 meters, until I reached some stairs with something resembling railings. I didn't go any further because I was alone, without signal, and I was afraid of going any further.

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Frequently Asked Questions

What unique geological features can be found in the caves of Basque Country?

The Basque Country's caves offer diverse geological wonders. Los Goros Caves are known for their impressive water formations, especially after rain or snow. The Pozalagua Caves are famous for housing the world's largest concentration of eccentric stalactites, which grow in unusual, gravity-defying directions. Additionally, the Verna Cave in the French Basque Country features the largest accessible underground room globally.

Are there caves in the Basque Country known for prehistoric art or archaeological significance?

Yes, the region is rich in prehistoric sites. Ekainberri is an exact replica of the original Ekain Cave, a UNESCO World Heritage site, showcasing spectacular Upper Paleolithic cave paintings. The Santimamiñe Cave preserves evidence of human settlements from over 14,000 years ago and significant cave paintings. Isturitz and Oxocelhaya Caves are major prehistoric sites with numerous archaeological findings and ancient art. Altxerri Cave, also a UNESCO World Heritage site, is known for its rock paintings and engravings, with some artwork estimated to be 39,000 years old.

Which caves in Basque Country are suitable for families?

Los Goros Caves are considered family-friendly, offering an engaging experience for all ages. Ekainberri, the replica of Ekain Cave, also provides interactive activities that are great for learning about prehistoric art with children.

Are there any accessible caves for visitors with disabilities in the Basque Country?

Yes, the Pozalagua Caves are easily accessible, including for people with disabilities, thanks to well-maintained walkways that facilitate the visit through its unique formations.

What kind of paleontological discoveries have been made in Basque Country caves?

The Arrikrutz Caves are a significant paleontological site. Here, remains of cave bears and cave lions have been discovered, including the only complete skeleton of a cave lion found on the Iberian Peninsula. Guided tours allow visitors to explore these archaeological remains.

What is the best time to visit caves in the Basque Country?

Many caves in the Basque Country can be visited year-round. However, some, like Los Goros Caves, are particularly impressive after rain or snow due to the enhanced water formations inside and outside. For prehistoric art sites like Ekainberri or Santimamiñe, indoor visits are less weather-dependent.

Are there any historical tunnels or religious sites within the caves of Basque Country?

Yes, the San Adrián Tunnel is a notable historical site. This 70-meter long tunnel, located at an altitude of around 1000 meters, contains a small chapel and has been used by pilgrims and merchants for centuries.

What outdoor activities can I do near the caves in Basque Country?

The Basque Country offers a variety of outdoor activities near its caves. You can find numerous hiking trails, including routes like the Berganzo Water Trail or the Talaia Trail. For cycling enthusiasts, there are MTB trails such as the Bilbao Green Ring MTB Loop. If you enjoy running, explore running trails like the Monte Urgull and city tour in San Sebastian.

Are there any caves in the Basque Country that offer panoramic views?

Yes, the Eye of Aitzulo is renowned for its extraordinary views from within the cave. It offers a spectacular perspective of the surrounding landscape.

What makes the Caves of Sare a unique destination in the Basque Country?

The Caves of Sare, also known as Lezea, are nestled in the Axturia mountains and showcase a natural habitat with atypical geology within a large limestone massif. Located in a picturesque village, they offer a guided underground journey and an original exploration of the subterranean world, making them a proud part of the local heritage.

What should I know about visiting Santimamiñe Cave?

While the original Santimamiñe Cave's interior is largely closed to the public for preservation, a visitor center offers a 3D virtual recreation. This allows you to explore the cave and admire its prehistoric art in detail without impacting the sensitive original site.

Are there any caves in the Basque Country that require special permits or guided tours?

For sites like Arrikrutz Caves, guided tours are necessary to explore the archaeological remains and geological formations. Similarly, Ekainberri and Santimamiñe offer guided experiences or virtual tours to protect the delicate prehistoric art. It's always advisable to check the specific requirements for each cave before visiting.

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