Best natural monuments around Merindad De Montija are found in the greenest area of Burgos, Spain. This region is characterized by mountains, rivers, waterfalls, and extensive cave systems, offering diverse ecosystems. Merindad De Montija provides a rich tapestry of natural landscapes, from vast underground formations to serene lagoons and ancient forests. The area is shaped by the Trueba and Cerneja rivers and bordered by the Cantabrian Mountains, contributing to its rugged and scenic beauty.
Last updated: July 1, 2026
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One of the emblematic mountains of the area.
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As it passes through the surroundings of the town of Espinosa de los Monteros, natural pools are formed in the Trueba river where locals and also visitors take advantage of the summer months to take a bath and cool off.
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It is highly recommended to fill the canteen here, as well as see the information panel.
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Ilso de las Estacas is a mountain 1037 meters high. The top is marked with a curious coffee pot on a pole and a booth. It offers magnificent views of the surrounding mountains and green valleys.
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Zalama is a mountain 1343 meters high. A few meters from the top there is a stone monolith where you can read: "Merindad de Montija, year 1886". At this point the borders of three provinces converge: Vizcaya, Burgos and Cantabria. Also close to the top is a peculiar and very scarce plant community today, the peat bog, a community of mosses and liverworts that takes root on a soil that is almost always flooded.
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In this area of the valley, at its bottom, the Río Trueba passes through the town of Espinosa de los Monteros. Along the river there are a set of natural pools originating from the river itself and which are used in summer by the inhabitants of the area.
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Both the waterfall and the environment that surrounds it are simply wonderful. Easily accessible, this waterfall is a waterfall of about 70 meters with a natural pool at its feet. A true paradise that deserves to be visited at any time of the year, although it is recommended in spring-summer.
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Very well restored this fountain, although it would have been more exciting to find it later!
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Among the most appreciated natural monuments in Merindad de Montija are the spectacular Asón Waterfall, a more than 70-meter high waterfall where the Asón river is born. Another popular spot is Zalama Summit, an emblematic mountain marking the convergence of three provinces. Visitors also enjoy Fuente Bezón, a natural spring coming directly from the mountain.
Yes, Merindad de Montija is home to the Monumento Natural de Ojo Guareña, one of Europe's largest karst complexes. It features over 110 kilometers of interconnected caves, galleries, and underground formations. A notable part of this complex is the San Bernabé cave and hermitage, which includes ancient mural paintings within a chapel carved into the rock.
Merindad de Montija offers a diverse range of natural features. You can explore vast cave systems like Ojo Guareña, serene wetlands such as the Lagunas de Antuzanos, ancient forests like the Hayedo de Bercedo (beech forest) and Robledal de Villasante (oak forest), and picturesque waterfalls like the Asón Waterfall and Salto del Aguasal. The region is also shaped by the Trueba and Cerneja rivers and bordered by the Cantabrian Mountains.
Absolutely. Several natural monuments are suitable for families, including the Asón Waterfall and Fuente Bezón, both listed as family-friendly. The Natural Pools of the Trueba River are also a great spot for families, especially in summer. Exploring the accessible parts of Ojo Guareña, such as the San Bernabé hermitage, can also be an engaging experience for all ages.
The best time to visit depends on your interests. Spring and autumn offer pleasant temperatures for hiking and exploring forests like the Hayedo de Bercedo, which is particularly stunning with its vibrant colors in autumn. Waterfalls like the Asón Waterfall and Salto del Aguasal are most impressive after rainfall, typically in spring or late autumn. Summer is ideal for enjoying the Natural Pools of the Trueba River and birdwatching at Lagunas de Antuzanos.
The region offers a variety of outdoor activities. You can find numerous routes for gravel biking, mountain biking, and cycling. For example, there are challenging gravel biking routes like the 'Natural Rock Arch of Puentedey – Puentedey loop' and moderate MTB trails such as the 'Naviciada Summit – Spring loop from Gayangos'. You can explore more options on the Gravel biking around Merindad De Montija, MTB Trails around Merindad De Montija, and Cycling around Merindad De Montija guide pages.
Yes, several natural monuments offer excellent viewpoints. Zalama Summit and Ilso de las Estacas Summit provide magnificent panoramic views of the surrounding mountains and green valleys. Additionally, hiking trails within the Ojo Guareña Natural Monument, such as the El Ventanón trail, lead to spectacular natural rock arches with breathtaking vistas of the Sotoscueva Valley.
The Lagunas de Antuzanos are considered the best wetland area in the province of Burgos. They are a crucial habitat for numerous aquatic birds, serving as a breeding ground, nesting site, and a significant stopover for migratory birds. An ornithological observatory near the Alto de Bocos recreational area enhances birdwatching opportunities, making it an idyllic location for nature enthusiasts.
Yes, Merindad de Montija is home to impressive ancient forests. The Hayedo de Bercedo, located near the town of Bercedo, is a magnificent beech forest perfect for tranquil walks. In Villasante, the municipal capital, you can explore the Robledal de Villasante, an extensive rebollo oak forest boasting over 500 bicentennial oak specimens, offering a serene environment to appreciate ancient trees.
The Trueba River and its tributary, the Cerneja River, are fundamental to the natural landscape of Merindad de Montija. They shape the territory, contributing to its rugged and scenic beauty. The Trueba River, in particular, forms natural pools near Espinosa de los Monteros, which are popular for swimming during the summer months, as highlighted by the Natural Pools of the Trueba River.
The Monumento Natural de Ojo Guareña is a prime example of a site that blends nature and history. Beyond its geological wonders, it is a vital archaeological site with cave paintings, engravings, and remains dating from the Middle Paleolithic to the Middle Ages. The San Bernabé cave and hermitage, carved into the rock, features ancient mural paintings, offering a unique cultural and natural experience.


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