4.5
(855)
5,346
hikers
238
hikes
Hiking around Ereño offers diverse landscapes, from dense woodlands to areas near the Urdaibai Biosphere Reserve. The region is characterized by varied terrain, including accessible paths and more challenging routes, providing opportunities to explore its natural features. Hikers can experience unique attractions like the Oma Forest, known for its painted trees, alongside general natural beauty.
Last updated: May 4, 2026
4.4
(30)
500
hikers
7.18km
02:04
190m
180m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
4.4
(13)
36
hikers
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

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4.3
(3)
36
hikers
3.72km
01:16
200m
200m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
3.8
(4)
13
hikers
10.4km
03:03
280m
280m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
7
hikers
13.8km
04:26
580m
580m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
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The Urdaibai Bird Center is an internationally renowned observatory that allows visitors to discover the wealth of migratory birds that pass through this reserve throughout the year. In addition to its viewing platforms overlooking the marshes, it features interactive spaces where visitors can learn about the ecological importance of Urdaibai and its role in global migration routes.
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Probably an old Basque song with impressive paintings on the wall
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The Oma Forest - Omako basoa in Basque - is also known as the painted forest, the enchanted forest or even the Ibarrola Forest. Its most common name - Oma Forest - refers to the district in which it is located, which belongs to the municipality of Kortezubi. This original work of art was created between 1982 and 1985, when the Basque painter and sculptor Agustín Ibarrola used the trunks of trees as a kind of canvas for a total of 47 images. On them he painted animals, geometric figures and people, or just parts of them, such as eyes and lips. In addition, many of the compositions do not consist of a single tree, but must be viewed in the context of several tree trunks. To do this, you must pay attention to the signs on the ground that tell the viewer where to stand in order to enjoy the whole image.
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The Oma Forest - Omako basoa in Basque - is also known as the painted forest, the enchanted forest or even the Ibarrola Forest. Its most common name - Oma Forest - refers to the district in which it is located, which belongs to the municipality of Kortezubi. This original work of art was created between 1982 and 1985, when the Basque painter and sculptor Agustín Ibarrola used the trunks of trees as a kind of canvas for a total of 47 images. On them he painted animals, geometric figures and people, or just parts of them, such as eyes and lips. In addition, many of the compositions do not consist of a single tree, but must be viewed in the context of several tree trunks. To do this, you must pay attention to the signs on the ground that tell the viewer where to stand in order to enjoy the whole image.
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The municipality is made up of the population entities of Akorda-Bollar, Basetxeta-Atxoste, Elexalde-Zeeta and Gabika.
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Ereño is a municipality in the province of Bizkaia, Euskal Herria, History Towards the middle of the 19th century, the place, a church already with its own town hall, had a population of six hundred inhabitants.
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In 1982, artist Agustín Ibarrola began painting the pine trees in the forest near his homestead with the intention of using the landscape as a canvas to give continuity to his artistic expression. It is at this moment when he decides to break the law of perspective and transgress the three-dimensionality of a white line until it becomes two-dimensional. From then on, he explored the possibilities offered by the arrangement of the forest trees, playing with the different planes of depth and creating artistic sets composed of human figures, curves or straight lines, and circles of intense colors. The ideas and concepts that it develops become more complex and advances in various directions as the painted forest expands. With the help of two students from the Faculty of Fine Arts of the UPV/EHU, he carried out a large part of the work that was open to the public until 2018, at which time the biological cycle of the forest came to an end. Given the importance that the work had acquired, the Provincial Council of Bizkaia began the process of making the Forest last, for which it had from the first moment the support of the artist who had made clear his desire for the forest to survive. In this way and in order to preserve El Bosque de Oma, the Ibarrola work has been moved to a new location, also recovering original artistic ensembles lost due to felling, attacks and natural tree falls. Today we can enjoy El Bosque de Oma more complete and more faithful to the artist's original idea.
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The Forest of Oma is one of the best-known works of the Basque artist Agustín Ibarrola and is an expression of the artistic movement known as Art and Nature, which emerged in the late sixties of the 20th century and whose purpose is to convey artistic work to the natural environment, using the landscape as a framework, support and raw material for the artist. The work, located in the town of Kortezubi (Bizkaia), is made up of several sets of geometric motifs and figures painted on the trunk of radiata pine trees. The use of natural living supports, the play of two-three-dimensionality and the experience of placing the visitor at the center of the work of art through his discovery, as well as the diversity of responses it proposes, make this work a reference of the Art and Nature movement and of Basque Art in particular.
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Ereño offers a wide selection of outdoor adventures, with over 240 hiking routes to explore. These routes cater to various preferences, including 78 easy, 131 moderate, and 31 difficult trails.
Hiking in Ereño provides diverse landscapes, ranging from dense woodlands to areas near the Urdaibai Biosphere Reserve. You'll encounter varied terrain, including accessible paths and more challenging sections, showcasing the region's natural beauty.
Yes, Ereño has several trails suitable for families and beginners. Many routes feature easily accessible paths, making them enjoyable for a broad range of hikers. For example, the Visitor center – Arteaga Castle loop is an easy 6.2 km path, perfect for all fitness levels.
Ereño is home to unique attractions like the Oma Forest, also known as the Painted Forest of Oma, where trees are adorned with art. You can explore this on routes such as the Visitor center – Oma Forest loop. Additionally, the nearby Santimamiñe Cave offers an important archaeological site with ancient paintings, and the Urdaibai Biosphere Reserve is known for its rich biodiversity.
Many of the hiking routes around Ereño are designed as loops, allowing you to start and end at the same point. Examples include the San Miguel Trail (Ereño) loop, which is a shorter 3.7 km option, and the longer Ea – Roman Bridge of Ea loop, covering 10.4 km.
The hiking routes in Ereño are highly regarded by the komoot community, boasting an average rating of 4.4 stars from over 800 reviews. Hikers often praise the diverse landscapes, the unique experience of the Oma Forest, and the variety of trails suitable for different abilities.
Yes, several trails offer access to interesting landmarks and scenic viewpoints. You can visit the Monastery of Santa María de Zenarruza, or enjoy views from San Pedro de Atxarre. The Visitor center – Arteaga Castle loop also passes by the historic Arteaga Castle.
While specific public transport options directly to every trailhead in Ereño might be limited, the region's proximity to the Urdaibai Biosphere Reserve suggests that some areas may be accessible via regional bus services. It's advisable to check local transport schedules for routes connecting to Ereño or nearby towns.
Ereño is generally welcoming to hikers with dogs, but it's always recommended to keep your dog on a leash, especially in areas with wildlife or livestock, and to clean up after them. Always respect local signage and regulations, particularly within protected areas like the Urdaibai Biosphere Reserve.
Parking is typically available near popular trailheads and visitor centers, such as the one for the Oma Forest. Many routes are designed to be accessible by car, with designated parking areas at common starting points. Always look for official parking signs and respect private property.
Generally, permits are not required for hiking the public trails around Ereño. However, for specific attractions like the Santimamiñe Cave, access might be restricted or require booking in advance for guided tours. Always check for any specific requirements for protected natural areas.
Ereño and its surrounding villages offer local establishments where you can find refreshments and meals. While not extensive, you can typically find cafes, pubs, or restaurants to relax and refuel after your hike, often serving traditional Basque cuisine.


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