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Austria | The Seegrotte: an incredible u ...

  • 2371 Hinterbrühl, Austria
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0
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Type
Altro
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Hosted in
Inglese

Description

The Seegrotte, near Hinterbrühl, Austria, is an underground cave system with a large grotto located under a former gypsum mine that was closed in 1912 after the mine flooded with 20 million liters of water. It became a tourist attraction after 1930 and has been one ever since, with the exception of World War II.The lake is 60 meters below ground, the water surface is 6200 m² and pumps are used to keep the waterlevel down.Visitors can tour the old mine and take a boat ride across the underground lake.

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