Best caves around Ochandiano are found in the surrounding Bizkaia region, with Ochandiano serving as a central point for accessing these subterranean sites. The area is characterized by its natural landscapes, including the Urkiola and Gorbeia Natural Parks, which host several notable cave systems. These caves are known for their geological formations, some featuring prehistoric art, and are often steeped in local mythological significance. Visitors can explore a variety of cave environments, from accessible chambers to more challenging routes requiring…
Last updated: July 3, 2026
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The best place to start the route to Alluitz.
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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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There's something eerie about these caves that leaves you with a bad feeling.
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Spectacular to say the least, it is almost scary to feel the cold of the surroundings.
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Located above a cave, this hermitage is next to the river and the old road that connected with the Cantabrian coast and Duranguesado. It is located next to a climbing area.
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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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This part of the Baltzola caves was normally the exit.
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Impressive cavity, until a while ago you could go through. They have recently put up a sign, warning of the danger of contracting Q fever, and the passage is prohibited.
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The region around Ochandiano offers a diverse range of caves. You can find impressive natural tunnels like the Abaro Tunnel, large cave systems with accessible galleries such as Mairulegorreta, and significant geological formations like the Baltzola Caves, known for their subterranean rivers. Some caves also hold historical and mythological significance.
Yes, the Santimamiñe Cave in Kortezubi, within the Urdaibai Biosphere Reserve, is renowned for its well-preserved Palaeolithic rock paintings, dating back over 13,000 years. It is a UNESCO World Heritage Site, offering guided tours and a 3D virtual experience of the art. The Baltzola Caves are also steeped in local Basque mythology, with legends of ancient inhabitants.
The Pozalagua Cave in the Karrantza Valley is famous for its extraordinary concentration of eccentric stalactites, which are unique formations that defy gravity by branching in various directions. The Baltzola Caves also feature impressive geological formations, including columns and stalagmites, and subterranean rivers.
While specific family-friendly cave tours vary, some caves like Mairulegorreta have easily accessible galleries. The Pozalagua Cave is also accessible via metal walkways and has provisions for disability access, making it suitable for a wider range of visitors. Always check specific cave access requirements before visiting.
When exploring caves, it's advisable to wear sturdy, closed-toe shoes with good grip, as surfaces can be uneven and wet. Layers of clothing are recommended as cave temperatures can be cooler than outside. For darker caves like the Abaro Tunnel, carrying a flashlight or headlamp is essential for visibility and safety.
Yes, some caves offer more challenging exploration. While Mairulegorreta has easy access in its initial sections, deeper parts require caving material. The Baltzola Caves are also known to attract spelunkers and climbers, indicating a more challenging environment. Always be aware of safety warnings and prohibitions, such as those at Baltzola regarding Q fever.
Yes, the region offers hiking opportunities that can include cave exploration. For instance, the area around the Baltzola Caves features the Jentilzubi Bridge, a natural limestone arch, which is part of a scenic walk. You can find various hiking routes in the vicinity by exploring Hiking around Ochandiano.
Beyond cave exploration, the natural parks surrounding Ochandiano, such as Urkiola and Gorbeia, offer a wealth of outdoor activities. You can find numerous hiking trails, running routes, and road cycling routes. The area near the Hermitage of the Holy Christ of Atxarte is also known as a climbing spot.
Access to certain caves may be restricted for preservation or safety reasons. For example, direct access to the painted areas of Santimamiñe Cave is restricted, with visitors experiencing it through guided tours and virtual options. The Baltzola Caves have had prohibitions due to the danger of Q fever. Always check local signage and official information before attempting to enter any cave.
While Ochandiano serves as a gateway, direct public transport to all cave entrances can be limited. The Baltzola Caves, for instance, are a short walk from the Indusi neighborhood, which is accessible from Otxandio. For more detailed information on reaching specific sites, it's recommended to consult local tourism resources like Visit Biscay.
Visitors often highlight the impressive natural beauty and geological features of the caves, such as the 'spectacular' feeling of Cueva de Otxarreta or the 'impressive entrance' of Mairulegorreta. The historical and mythological significance, particularly at sites like Santimamiñe and Baltzola, also captivates many. The komoot community has shared over 40 photos and 20 upvotes, reflecting a strong appreciation for these subterranean wonders.
Yes, Mairulegorreta is designated as a natural monument. The Santimamiñe Cave is located within the Urdaibai Biosphere Reserve and is a UNESCO World Heritage Site. Pozalagua Cave is situated within the Armañón Nature Park, highlighting the protected status and ecological importance of these sites.


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