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Seegrotte in Austria – the largest underground lake in Europe

Seegrotte in Austria – the largest underground lake in Europe

Not far from Vienna, in the village of Hinterbrül, there is the cave system with the largest underground lake in Europe – Seegrotte, covering an area of 6,200 m². It is not a classic natural cave but the former gypsum mine. In 1912, the ceiling fell down and mine was flooded with 20 million liters […]

Updated: March 10, 2020 | By | 2 Replies More


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