Best waterfalls around Sierra De Aralar are found within a natural park characterized by its rugged karstic massif and dense beech forests. This region, straddling Navarre and Gipuzkoa, features numerous streams that create picturesque waterfalls. The area's karstic geology results in a unique landscape with distinctive sinkholes and underground water systems that feed these falls. Many waterfalls are integrated into well-marked hiking trails, offering opportunities to explore the park's diverse flora and fauna.
Last updated: October 7, 2026
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In summer, a refreshing dip is guaranteed
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The truth is that I haven't seen any waterfall, but that's where it is. Maybe there was little water. Further up, the path to the Ondarre spring is marked.
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a beautiful waterfall with several natural bathtubs to enjoy a good bath
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Beautiful waterfall in a charming area
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Consecutive waterfalls that form in the course of the Amezketa stream. carrying its waters to Ergoiena.
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I hope you spend it there as I did. Full throttle!
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Nice waterfall on the bed of the Larraun Ibaia river. It is one of the attractions on the itinerary of the Vía Verde de Plazaola, a very picturesque route that you cannot miss.
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The Sierra de Aralar offers several rewarding waterfall hikes. A popular choice is the route to Ixkier Waterfall, which is a key highlight on various trails, including a favored option from Lekunberri. Another accessible and scenic walk leads to the Nacedero de Urruntzure, known for its comfortable, relatively flat path near Irañeta. For a more powerful display of nature, consider the journey to Nacedero del río Ertzilla (Aitzarrateta), where subterranean waters emerge forcefully.
Yes, the Nacedero de Urruntzure near Irañeta is particularly suitable for families and those seeking easy access. The route to this waterfall is comfortable and relatively flat, making it accessible for various hikers. Its dramatic backdrop of the Madalenaitz peak adds to its scenic appeal without requiring strenuous effort.
The waterfalls in Sierra de Aralar are beautiful year-round, but certain seasons offer unique experiences. Autumn is particularly vibrant, as the extensive beech forests surrounding the falls display stunning colors. For the most impressive water flow, visiting after a rainy period is highly recommended, especially for waterfalls like Osinberde Waterfall, where its pool turns a striking turquoise when carrying ample water.
Beyond the waterfalls themselves, the Sierra de Aralar is rich in natural beauty. You'll encounter rugged karstic formations, distinctive sinkholes, and a network of underground water systems that feed these falls. The region is also characterized by lush beech forests, which provide a stunning backdrop, especially vibrant during autumn. Many trails also offer views of rivers and other natural landscapes.
Yes, the region offers a blend of natural and historical interest. Near the Nacedero del río Ertzilla, you can find the ruins of an old water mill, adding a historical dimension to the natural beauty. Additionally, the Arritzaga Mining Valley, which features waterfalls and streams, was once home to an old copper mine, with ruins still visible today. The wider Sierra de Aralar also boasts megalithic heritage and traditional shepherd huts.
The Sierra de Aralar offers a wide range of outdoor activities. Besides hiking to the waterfalls, you can explore numerous cycling routes. For example, there are many traffic-free bike rides, including routes that pass by Ixkier Waterfall. Mountain biking is also popular, with various MTB trails available throughout the region. The diverse terrain caters to different skill levels and interests.
Visitors frequently praise the serene and natural beauty of the area. The soothing sound of flowing water, combined with the tranquil forests, provides a perfect escape. Many appreciate the powerful emergence of water at sources like Nacedero del río Ertzilla and the picturesque settings of falls like Amezketa Stream Waterfall. The opportunity to combine waterfall viewing with hiking through lush landscapes is also a major draw.
Yes, the Sierra de Aralar region is rich in natural attractions. Near the Nacedero del río Ertzilla, you can also explore the Lezegalde and Mendukilo caves, offering a comprehensive natural exploration experience. The karstic geology of the area means there are many unique rock formations and underground water systems to discover.
Absolutely. Many waterfalls in Sierra de Aralar are integrated into well-marked trails. For instance, Ixkier Waterfall is a significant highlight on several hiking routes and is also part of the Vía Verde de Plazaola, a very picturesque cycling route. The Nacedero de Urruntzure is a segment of the GR-20 route, offering a pleasant walk to the falls.
The Osinberde Waterfall is known for its beautiful pool, which, when carrying sufficient water, displays striking turquoise colors. It is highly recommended to visit this waterfall after a rainy episode to witness its most vibrant display. It's nestled within a forest, offering a tranquil and picturesque setting.
The Source of the Larraun is a beautiful natural place that marks the origin of the Iribas River, which later joins to form the Larraun. While not a dramatic cascade, it features smaller waterfalls and streams as the water emerges, making it a picturesque setting with various trails leading to it. It offers insight into the region's hydrological system.


Happy to travel a little further afield? Then browse these guides for the best waterfalls around Sierra De Aralar: