Blauhöhlensystem, Cave system in Blaubeuren, Germany
The Blauhöhlen system is a cave network near Blaubeuren that extends across multiple levels and lies mostly below the earth's surface. The passages cut through limestone layers and connect various chambers and underground passages to one another.
The system formed about 150 million years ago when this region was covered by a warm sea that deposited limestone. Over time, flowing water and geological shifts carved out the caves that exist today.
The name comes from the Blautopf, an underground spring with distinctly blue water that visitors can see from outside. This natural coloring gave the entire cave system its name.
The system is not accessible to regular visitors, but the nearby Prehistoric Museum shows a free film about underground exploration. Those who want to learn more about the caves will find information there about the entire network and the research being conducted.
One section of the system, the Blautopf, is only accessible to experienced cave divers who must navigate through water to reach dry chambers beyond. This specialized exploration has revealed that the system is much larger than previously thought.
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