Best natural monuments around Valle de Arana/Harana are characterized by diverse natural features, including forests, rivers, and mountainous terrain. The valley is situated between mountain ranges exceeding 1000 meters, with a hydrographic network formed by the Istora and Uiarra rivers. Its landscape features green meadows, beech, birch, and chestnut forests, supporting varied fauna. The area offers opportunities for outdoor activities, from short walks to mountain ascents.
Last updated: July 1, 2026
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impressive views of the vultures and the ravine
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A very beautiful rocky landscape with passages, arches and rock "tables"
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Very easy walk to start
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I went in July 2023. This cave is completely closed. There are signs from the Basque government saying DO NOT ENTER (and explaining the consequences and the work they're doing) and plastic tape blocking the entrance. There are lots of constructions tools around too. Don't expect to get in unless you're willing to destroy the small stone wall and all the tape blocking the entrance.
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Achievement of several waterfalls hidden among a beech forest. Although they show their maximum splendor after a rainy episode, the path turns into a muddy area which makes it quite uncomfortable to run.
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Within the Urbasa-Andia Natural Park is this wonderful place with an interesting history related to its name. In addition to being one of the most spectacular caves in the area, its name dates back to the Carlist era in which it is said that General Zumalacarregui threw the shot soldiers of the other side, who were known as Cristinos or Isabelinos. Before going to the place, I recommend that you check on the official website if access is open, a while ago it was closed due to COVID (http://cuevacristinos.com/)
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Valle de Arana/Harana is rich in diverse natural features. You can discover impressive karst formations like the Zalamportillo Arch, picturesque waterfalls such as the Tobería Waterfalls and Igoroin Waterfalls, and intriguing caves like Cueva de Los Cristinos with its underground lake. The region also boasts dense beech, birch, and chestnut forests, along with a hydrographic network formed by the Istora and Uiarra rivers.
Yes, the area around the Ermita de Santa Teodosia is particularly notable. It features a remarkable singular ash tree (Fresno) that has been cataloged by the Basque Government for its age and dimensions. This area is also home to a beautiful ash forest and dense beech forests, offering a stunning natural landscape.
The diverse natural environment of Valle de Arana/Harana supports a variety of wildlife. Visitors might spot falcons soaring overhead, as well as roe deer, wildcats, and martens within the green meadows and extensive forests.
Absolutely. The Izki Gorge Viewpoint, located opposite the Muela hill within the Izki natural park, offers essential scenic views. The area around the Ermita de Santa Teodosia, situated at approximately 1100 meters, also provides impressive panoramas of the surrounding landscape.
Yes, the Zalamportillo Arch is noted as family-friendly, offering an impressive natural formation that can be an exciting discovery for all ages. When planning, consider trails with easier terrain and shorter distances, which are plentiful in the valley's green meadows and forests.
For the most spectacular display of waterfalls like the Tobería Waterfalls and Igoroin Waterfalls, it is best to visit after periods of heavy rainfall or during the thaw season. During dry seasons, the Igoroin Waterfalls, for instance, may have very little or no water.
Given the varied terrain and potential for muddy paths, especially near waterfalls after rain, it's advisable to pack appropriate hiking footwear, possibly with good grip or mud crampons. For exploring caves like Cueva de Los Cristinos, a good flashlight or headlamp is essential. Always carry water, snacks, and layers of clothing suitable for changing weather conditions.
The natural monuments are surrounded by opportunities for various outdoor activities. You can find numerous hiking trails, including moderate routes like the 'Cave of the Cristinos - Hermitage of San Benito – circular from Larraona'. For more challenging adventures, there are mountain hikes and road cycling routes available. Explore more options on the Hiking around Valle de Arana/Harana, Mountain Hikes around Valle de Arana/Harana, and Road Cycling Routes around Valle de Arana/Harana guide pages.
Some locations, such as the Zalamportillo Arch, can be challenging to navigate, with visitors recommending the use of GPS as the entrance and exit are not always easy to find. For waterfalls like Tobería Waterfalls, paths can become very muddy after rain, making the journey uncomfortable without appropriate footwear.
Visitors frequently appreciate the impressive natural formations, the tranquility of hidden spots like waterfalls nestled in beech forests, and the scenic views from various viewpoints. The sense of discovery, especially in places like the 'magical' Zalamportillo Arch, and the combination of forest, rivers, and mountains for outdoor activities are highly valued.
While primarily focused on natural beauty, the area around the Ermita de Santa Teodosia holds cultural significance. The hermitage itself is a historical site, and a sapling of the symbolic Gernika Tree can be found nearby. Additionally, Cueva de Los Cristinos has an interesting history related to its name, dating back to the Carlist era.
The valley's natural beauty can be enjoyed year-round, but autumn is particularly recommended for its vibrant colors, especially in the beech and ash forests. Spring also offers lush greenery and full-flowing rivers and waterfalls after winter rains. However, be mindful that paths can be muddy during wet seasons.


Extend your search for the best caves by checking out these guides of the top ones around Valle de Arana/Harana: