Best caves around Miera are situated in a region characterized by its karstic landscape, featuring numerous underground formations and river sources. The area includes diverse terrain, from river valleys to forested paths and mountain ascents. Miera offers opportunities to explore both accessible cave entrances and more challenging subterranean systems. This region provides a variety of caving experiences for different skill levels.
Last updated: July 4, 2026
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Although it's not recognizable from a distance, as you approach the entrance, you discover an opening to the other side. So it's not a "cave," but rather a hollowed-out hole. It's a very interesting visit if you're hiking nearby; don't let the distance and extra effort deter you from missing this opportunity.
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La Cueva de la Colodra is a curious cavity with the typical shape of a movie cave that you can enter its "portico" perfectly standing up but after a few steps inside you discover that it continues through a much smaller and narrower cavity in which You have to crouch down and have more trouble if you want to explore, yes, a flashlight and some basic precautions are necessary here with some more equipment in case it is necessary. It is found going up a few steps from the path that goes up to Alto de Brenas and also to Alto de los Escajos, it is a comfortable path to follow so it does not cost much to deviate and visit this cave, and just a few meters away the birth also begins from the stream of the same name. Of course, if you look calmly from inside it seems that you have a wonderful window to paradise and you breathe authentic peace and tranquility, it is a great place.
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Legend has it that a French abbot, fleeing the Revolution, came to these places, hiding in the cave. And they say that, from so much crying, his eyes became irritated in such a way that they caused him bad eyesight. But, on one occasion he noticed that by washing them with the waters of the fountain, his eyes healed. Hence the discovery of the virtues of the waters and the name of the place.
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Magnificent cave with beautiful views that is worth visiting. It is a few meters away from the path up to Brenas and passing through the Peñal de Brenas.
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Nice and quiet path that runs along the river through the foliage of the forest.
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In the middle of the Asón river path, on the way to Arredondo.
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The Cubera cave is located at kilometer 2.8 of the road that goes from Arredondo to La Sia and its mouth is at the same level as the road and it has a spring that drains its waters from the currents of the system that predominates in the cave. zone. This cavity is divided into three zones according to its characteristics. Thus we have: The Fossil Network of the Sima de Cueto which is characterized by having huge corridors in which there is no water around it and the ground is made up of large stone blocks which makes it difficult to transit through this area. Another section is the Intermediate Network which is made up of a large number of caves and labyrinth-like paths, these suppose an excavation after the waters and has several levels, these connect the Sima del Cueto and La Coventosa. The third section in the Coventosa Gallery, which is located next to the previously described labyrinthine area, communicates with almost all the galleries as well as with the Cubera spring. Information taken from: https://www.viajarporcantabria.com/la-cueva-de-cubera/
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In the Bº de Rioz, in Sobremazas (Medio Cudeyo), behind the public washhouse, at the bottom in the rocks is a small cave where clear and crystalline water emerges and is where the source of the Cubón river is dated. The cave also gives the name to the small park that surrounds it, which has 3 wooden tables, a fountain and a small recreational park for young children and one of the Singular Trees of Cantabria: El Castaño de Rioz.
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Yes, the Miera region offers several family-friendly options. Aguanaz River and Frenchman’s Cave provides a quiet river walk through forest foliage, suitable for families. Another great spot is La Covachona Cave and Source of the Cubón River, which features a small park with recreational facilities and the source of the Cubón river.
The Miera region offers a range of caving experiences. Some caves, like the initial section of Cueva de la Colodra, allow standing entry before narrowing, requiring crouching for further exploration, making them intermediate. More challenging systems, such as Cubera Cave, feature large stone blocks and labyrinthine paths, suitable for experienced cavers.
The caves around Miera are known for their karstic landscape. You can expect to see river sources emerging from caves, such as at La Covachona Cave and Source of the Cubón River. Many caves are also natural monuments, and some, like Cueva de la Colodra, offer beautiful views from within.
Beyond caving, the Miera region is excellent for various outdoor activities. You can find numerous hiking trails, including moderate loops from La Pedrosa or more difficult routes like Pico Porracolina. There are also extensive cycling routes, such as the Miera River Valley loop, and running trails for all levels.
Yes, the Miera region's karstic landscape means you'll encounter unique formations. Juntarnosa Arch, for example, is a hollowed-out natural arch that is an interesting visit for hikers. Historically, Aguanaz River and Frenchman’s Cave is associated with a legend of a French abbot who hid there during the French Revolution, discovering the healing properties of the local waters.
For cave exploration in Miera, it's advisable to wear comfortable clothing that you don't mind getting dirty. Layers are recommended as cave temperatures can be cooler than outside. Sturdy, closed-toe shoes with good grip are essential, especially for caves with uneven terrain or requiring crouching. A flashlight or headlamp is also necessary for deeper exploration.
The Miera caves can generally be visited year-round, but the best time often depends on the specific cave and your activity. During warmer months, caves offer a cool escape. In wetter seasons, some river caves might have higher water levels. Always check local conditions and specific cave accessibility before planning your visit.
Yes, some caves in the Miera region provide scenic views. Cueva de la Colodra is noted for offering beautiful views from within its entrance, described as a 'wonderful window to paradise.' Additionally, Juntarnosa Arch is a natural monument that also serves as a viewpoint.
Cubera Cave is considered challenging due to its complex internal structure. It's divided into three main zones: the Fossil Network, characterized by huge corridors with large stone blocks making transit difficult; the Intermediate Network, a labyrinth of paths and multiple levels; and the Coventosa Gallery, which connects to most other galleries. These features require significant caving experience and equipment.
Yes, near La Covachona Cave and Source of the Cubón River, you'll find a small park surrounding the cave. This park includes three wooden tables, a fountain, and a recreational area for young children, making it a pleasant spot for a break.
Visitors to the Miera caves appreciate the diverse experiences offered, from quiet river walks and accessible cave entrances to challenging subterranean networks. The natural beauty, unique geological formations, and the sense of peace and tranquility found within places like Cueva de la Colodra are frequently highlighted.

