Cantabria, with 6,000 caves scheduled, although there are many more, is considered the Spanish autonomous community with the largest number of cavities. That is also a paradise world of caving, which annually attracts business to the region to many athletes and fans, which increases the risk of accidents and therefore, emergency interventions and bailouts in caves.

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Cantabria is characterized by numerous prehistoric caves of artistic, historical and geological enormous: The Soplao Cullalvera, El Castillo and Altamira are the greatest expression of this heritage.

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