Natural monuments around Marquina-Jeméin are characterized by a diverse landscape of mountains and coastal features. The area offers geological formations and unique natural sites, including ancient rock structures and forested areas. This region provides opportunities to explore natural settings and observe geological phenomena. Its blend of natural beauty and historical elements makes it a notable destination for outdoor exploration.
Last updated: July 15, 2026
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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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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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You can sometimes see a thin black layer in the different layers of the rocks. This was caused by a meteorite impact 66 million years ago, which led to the extinction of dinosaurs (and 60% of other animal species).
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This hexagonal-shaped hermitage from the 18th century was built because the previous one was in ruins. The three large rocks inside draw attention, holding each other together. Within these rocks is the figure of the Archangel Saint Michael.
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This bridge is an incredible find in the middle of the forest. It is covered with ivy and in summer it is so green that it is hardly visible. If you go down next to the river you can take some great photos with the water and the bridge. For many years this bridge has had to survive numerous floods. It's amazing that he's still here.
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Sakoneta Beach is a place of beauty and wonder. The geological formations along the coast here are very interesting. It is a place that you cannot miss if you are in this area.
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The Artzubi Romanesque bridge was built in the 16th century. Wherever you see it, it has overcome floods and floods from the Golako River, which passes below and flows into the Oka River. In another time there were more bridges like this one, but it is the only one in the area that has endured. https://www.urdailife.com/artzubi-puente-cuento-arratzu-mendata/
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Beyond the well-known spots, Marquina-Jeméin offers a fascinating blend of natural and historical wonders. The Artzubi Bridge, a 16th-century Romanesque structure, is beautifully integrated into its natural surroundings and is part of the Camino de Santiago. You can also discover the unique Oma Forest, known for its painted trees, offering an artistic experience within nature.
Yes, the region boasts impressive geological formations. The Mendatagaina Viewpoint and Flysch Cliffs offer spectacular views over the Basque coast and Sakoneta beach, where you can observe the dynamics of coastal erosion and tidal flats. Additionally, Playa de Sakoneta itself is notable for its geological layers, including a thin black layer believed to be from the meteorite impact that led to the extinction of dinosaurs.
The viewpoints in the area offer diverse and stunning panoramas. From the Mendatagaina Viewpoint, you'll get expansive views of the Basque coastline and the dramatic flysch cliffs. The Balcón de Bizkaia Viewpoint, located on the slopes of Oiz, provides a breathtaking perspective of the mountainous landscape and the vast forest masses of the Urdaibai basin.
Absolutely! The Oma Forest, with its painted trees, offers a unique and engaging experience for families. The Balcón de Bizkaia Viewpoint is also considered family-friendly, providing accessible views of the region's natural beauty. Many of the hiking trails in the area are suitable for various skill levels, making them enjoyable for families.
The diverse landscape around Marquina-Jeméin is perfect for outdoor enthusiasts. You can enjoy various hiking trails, such as the moderate Urregarai and Santa Eufemia Trail, or more challenging routes like the Akarregi y Kalamua circular hike. For cyclists, there are numerous road cycling and touring bicycle routes available. You can find more details on these activities in the Hiking around Marquina-Jeméin and Cycling around Marquina-Jeméin guides.
Historically, the area was known for the natural springs at Urberoaga de Azola, located a couple of kilometers from the town. These springs, which released mineral and medicinal waters at 27 degrees Celsius, led to the establishment of a large spa. While the spa is no longer active, the presence of these springs highlights the region's geological richness and natural heritage.
Visitors frequently praise the spectacular views, especially from coastal viewpoints like Mendatagaina. The unique artistic experience of the Oma Forest is also highly appreciated. Many enjoy the blend of natural beauty with historical elements, such as the ancient Artzubi Bridge, and the opportunity to explore diverse landscapes ranging from coastal cliffs to forested hills.
Yes, there are hiking options suitable for beginners. For example, the Ansotegui Palace loop from Markina-Xemein is an easy 6.6 km route. Other moderate trails, like the Urregarai and Santa Eufemia Trail, offer accessible ways to experience the natural environment. You can explore more options in the Hiking around Marquina-Jeméin guide.
The region's natural monuments can be enjoyed throughout much of the year. Spring and autumn generally offer pleasant temperatures for hiking and outdoor activities, with lush greenery or vibrant fall colors. Summer is ideal for coastal visits, though it can be busier. Winter walks are also possible, especially in forested areas, but it's always advisable to check the weather forecast before heading out.
Yes, the Hermitage of San Miguel de Arretxinaga, though not listed in the guide's highlights, is a remarkable example. This 18th-century hexagonal hermitage was uniquely built around three gigantic, 40-million-year-old rock formations that serve as a natural altar. It's a fascinating site where human architecture and ancient natural wonder converge, showcasing the region's geological significance.
While specific parking details for each monument are best checked locally upon arrival or through detailed route planning, many trailheads and popular natural sites around Marquina-Jeméin offer designated parking areas. For public transport, local bus services connect the main towns, but access to more remote natural monuments might require a car or a combination of transport and walking. Planning your route on Komoot can help identify starting points and potential access options.


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