The cave is CLOSED untill June 20th 2020!
Over the winter 2019-2020 a new visitor center will be built at the entrance of the cave.
This will include a new shop, snacking area, conference room and a showroom about the cave.
Therefore the winter break will be extended up to June 20th 2020.
Duration of the tour is around 30 minutes and the temperature in the cave is 15 Celsius.
Tours start all day long, every 20 to 40 minutes.
No prior booking needed for individual travelers. Groups over 20 people might book in advance.
In the morning, the first tour starts about 20 minutes after the first visitors arrive.
All tours are guided tours on a boat with explanations in English, French and German.
Other languages on request depending on availability.
Pictures without flash allowed. It is not possible to access the cave on foot. Swimming and diving are not permitted.