Opening times and prices

Opening times


 
2025
10 February to 07 March   
Visiting hours from Monday to Friday
From Monday to Thursday: visits at 2:30 p.m. and at 4 p.m.
Friday: visit at 2:30 p.m.

 

24 March to 02 November
Open 7 days a week
24 March to 06 JulyVisits from 9:30 a.m. to 12 p.m. and from 1:30 p.m. to 5 p.m.
07 July to 24 AugustVisits from 9 a.m. to 6 p.m.
25 August to 02 NovemberVisits from 9:30 a.m. to 12 p.m. and from 1:30 p.m. to 5 p.m.

To know more


All the tours are guided and last about 1h20.

It is highly recommended for individual visitors to book in advance through the website.
It is essential to arrive 30 minutes before the start of your visit (a shuttle will take you to the entrance of the Caves).

Strollers are not permitted due to the steps. The use of a baby carrier is recommended for young children.
For groups and for disabled visitors, please refer to the dedicated page. 
 

Prices


 

Adult

 17,00€

Reduced price for adult ** 

 15,00€

Child (from 4 to 12 years old)*

 12,00€

Reduced price for child (from 4 to 12 years old)**    

 10,50€


* A valid credential will be requested.     
** Work council and members of the military, consult us. A valid credential will be requested. 

Information


Due to a technical problem, the boat trip across the lake (approx. 100 m) is temporarily suspended.

The Grottes can still be visited in their entirety, however. A path running alongside the lake allows you to discover this section on foot, without altering the beauty or interest of the route. You can continue to enjoy the underground galleries, the impressive geological formations and the train ride at the end of your visit.

We thank you for your understanding, and look forward to welcoming you for an incredible underground experience.

bordure bloc