Best caves around Arruazu are situated within the broader Navarra region, an area known for its varied natural landscapes including mountain ranges like the Sierra de Aralar. This region features diverse geological formations, from impressive natural arches to extensive cave systems. These subterranean environments offer both natural beauty and historical significance, attracting those interested in geology and local folklore. Arruazu provides access to exploring these unique underground features.
Last updated: August 14, 2026
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Always impressive, I love it, absolutely recommended!!
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The Portupekoleze arch-cave, located in the Urbasa mountain range, is the spectacular result of water erosion, which over the millennia has created this enormous arch in the rock.
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Of the most accessible and cool places with snow, the car park is less than 1 kilometer away
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Beautiful arch very close to the sale of Lizarraga. It can be accessed from the lower track or going up close to the cut from the inn itself. You can go down to the lower cave. This arch is an unavoidable "must" if you are in the area.
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It is impressive, be careful on foggy days, it is easy to get lost.
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Today I wanted to try to see it in the harsh light of midday, which is not usually very good for photos, and still ... it is a special place.
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It took me a lot to go down to the cave: it has a loooong slope and it's full of leaves. And that the ground was dry. I got just to enter the cave but I did not go down the, I think, meters of difference in level from the mouth.
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Incredible hidden cave under the Puttarri, it is recommended not to enter without the proper equipment
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The region around Arruazu, within the broader Navarra area, offers a diverse range of subterranean formations. You can find impressive natural arches like Portupekoleze Arch, traditional caves with stunning geological formations such as the Urdax Caves and Mendukilo Cave, and unique cave passages like Puttarri Cave Passage. Some, like the Zugarramurdi Caves, are notable for their vast galleries rather than stalactites.
Yes, the Navarra region is rich in folklore and history. The Zugarramurdi Caves, known as 'the Witches' Cave,' are famous for their connection to 17th-century witchcraft trials and pagan gatherings. The Urdax Caves have a history of habitation by prehistoric humans and served as a refuge for guerrillas and smugglers, with legends of mythological beings called 'lamias' also associated with them.
For families, Portupekoleze Arch is highly accessible and considered an impressive spot. The Mendukilo Cave is also well-suited for visitors, featuring floating walkways and multimedia lighting during its guided tours, making it an engaging experience for various ages.
The Mendukilo Cave in the Sierra de Aralar is renowned for its extraordinary beauty and impressive geological formations, including chambers like Laminosin and Herensugearen gotorlekua. The Urdax Caves also offer a stunning display of stalactites and stalagmites formed over thousands of years. Additionally, Lezaundi is appreciated for its beauty both inside and out.
Difficulty varies significantly. Portupekoleze Arch is very accessible. However, some cave experiences, like the Puttarri Cave Passage and CuevaArleze, are considered challenging and may require proper equipment due to steep slopes or narrow passages.
The region offers various outdoor activities. You can explore mountain hikes in the Sierra de Aralar, where Mendukilo Cave is located, or enjoy cycling routes. A popular 8 km path, known as the 'Pottoka Azul' (Blue Pony) path, connects the Urdax Caves with the Zugarramurdi Caves, allowing for a scenic walk between these two significant sites. For more hiking options, explore Mountain Hikes around Arruazu.
For some of the larger cave systems, guided tours are available and recommended. The Urdax Caves and Mendukilo Cave both offer guided tours, often enhanced with light and sound systems, to provide a comprehensive and safe experience. For more challenging cave passages like Puttarri Cave Passage, it is recommended not to enter without proper equipment and potentially a guide.
Caves generally maintain a constant, cool temperature year-round. For instance, the Urdax Caves are consistently 14°C. It's advisable to wear layers, including a light jacket or sweater, and comfortable, sturdy footwear suitable for uneven or potentially damp surfaces. For more challenging caves, specific caving equipment might be necessary.
Caves can be visited year-round due to their stable internal temperatures. During warmer months, caves like Lezaundi offer a cool retreat. In winter, accessible spots like Portupekoleze Arch can be impressive with snow. Always check specific cave opening hours and conditions before your visit.
For additional details on caves and other attractions in the broader Navarra region, you can visit the official tourism website: visitnavarra.es.
Yes, several caves are integrated into hiking networks. The Mendukilo Cave is located in the Sierra de Aralar, an area known for mountain hikes. The 'Pottoka Azul' path specifically links the Urdax Caves and Zugarramurdi Caves, offering a dedicated route for exploring both. You can find more hiking opportunities in the area by exploring Mountain Hikes around Arruazu.


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