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The Top 14 Caves in Biscay

Looking to visit a cave in Biscay on your next adventure? To help you better plan your next outdoor experience, we’ve collected Biscay’s 14

best caves for you. Based on the experiences of other users, each is a recommendation you know you can trust — so you can better plan your next adventure.

Last updated: October 20, 2025

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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Santimamiñe Cave Paintings, Kortezubi

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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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Get recommendations on the best single tracks, peaks, & plenty of other exciting outdoor places.

Ezkerraldea Mining Museum

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Former offices of one of the main iron extraction areas in the region. Currently the heart of the Ezkerraldea Biotope. A space protected by its categorization of the land.

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Supelegor

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One of the most beautiful caves I have ever seen. First because of the location, second because of the small challenge of not getting lost to get there, and thirdly …

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Baltzola Caves

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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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Ermita del Santo Cristo de Atxarte

Highlight • Religious Site

The best place to start the route to Alluitz.

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San Martín Hermitage and Caves

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Restored hermitage. Picnic table and benches

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Axlaor Cave (Itxina Massif, Gorbea Natural Park)

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Cave inside the so-called Great Central Crack, in the Itzina Massif. Its interior can be accessed by descending the ramp of the natural tunnel from the mouth of Axlegor, municipality of Orozko (Bizkaia).

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CuevaDeLaPuertaDeHierro

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It can only be accessed one or two meters, but it is interesting.

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CuevasDelPagasarri

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Really, I only found a cave, but it was curious to see

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

Gipuzkoa Álava

The Top 14 Caves in Biscay

Abaro Tunnel

Santimamiñe Cave Paintings, Kortezubi

Ezkerraldea Mining Museum

Supelegor

Baltzola Caves

Ermita del Santo Cristo de Atxarte

San Martín Hermitage and Caves

Axlaor Cave (Itxina Massif, Gorbea Natural Park)

CuevaDeLaPuertaDeHierro

CuevasDelPagasarri

Other adventures in Biscay

Most popular routes in Biscay

Most popular attractions in Biscay

Get inspired with the komoot mobile app

Explore more

Get ready to conquer new peaks

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