Los Argüellos Biosphere Reserve
A place for caving
The Los Argüellos Biosphere Reserve, declared a World Heritage Site by the UNESCO in 2005, is a representative example of an ecosystem in the mountain range of Cantabria.
The Argüellos are located in Castile and León, in the central area of the north of the province of León and include the municipalities of Vegacervera, Cármenes and Valdelugueros. Its uniqueness lies in its landscape, which combines aesthetic value and scientific interest: Several of the existing caves have significant biodiversity, while their ravines and karst formations help us understand the geological processes of the Cantabrian Mountains, the only example in Europe that presents a high mountain ecosystem located so close to the sea and at such a relatively low altitude. The orography of Los Argüellos is, precisely, one of its main attractions. Caving enthusiasts will enjoy the spectacularly beautiful caves, such as Valporquero, Llamazares and Barredo; narrow crevices and gorges and impressive ravines, such as the Vegacervera and Valdeteja gorges. The numerous cavities and fissures make it possible for 15 of the 26 species of bats found on the Iberian Peninsula to live in this small area. Birds of prey are also representative.
Los Argüellos Biosphere Reserve
León (Castilla y Leon)
León (Castilla y Leon):
- Cármenes
- Valdelugueros
- Vegacervera
What you need to know
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Cultural information
Livestock farming is one of the main activities carried out in this area, which also facilitates landscape conservation. Meadows and pastures are a traditional element of great interest.
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Environmental information
In addition to being home to various species of flora and fauna endemic to the Cantabrian Mountains, such as the grey partridge and the broom hare, this area is crucial for the survival of the brown bear, an endangered species in Spain.
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Information for visits
The main towns in this area are located about 50 kilometres from the city of León, following the N-630 road towards Asturias. There are established cycling and hiking trails that allow visitors to explore the surrounding area.
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