The orography of Castilla y León has given rise to numerous caverns, making it a paradise for lovers of these subterranean cavities. Situated in the heart of the mountain ranges, near natural spots of great heritage value, these caves offer a true spectacle buried deep in the earth.

The action of water and the passage of time over centuries have created galleries of fantastic shapes, 1,000-year-old stalactites, natural passages, large caverns, and interior corridors hidden from sunlight, which have now been recovered for the tourist's enjoyment. A landscape halted in time within its own ecosystem, only accessible through the imagination, which really comes to life when the artificial lights are turned off.