Guided tours

Grimsel Test Site (Canton of Bern)

From Monday, 19 April 2021, we will again be offering guided tours of the Grimsel Test Site for groups of up to 13 people.
Larger groups will - if possible - be divided up accordingly and guided through the rock laboratory at staggered times.
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Mont Terri Rock Laboratory (Canton of Jura)

From Monday, 19 April 2021, we will again be offering guided tours of the Mont Terri rock laboratory for groups of up to 26 people.
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Drill sites

From Monday, 19 April 2021, guided tours of the Stadel-2 and Stadel-3 drill sites will again be available for groups of up to 11 people. Larger groups will - if possible - be divided up accordingly and guided to the drill site at staggered times.

The visitor platforms of the Stadel-2 and Stadel-3 drilling sites are open for individual visits 24 hours a day.

We look forward to your visit.

What does a mountain look like inside? How does an echo sound in a tunnel?

Visit us and form your own impression! A guided tour of an underground rock laboratory will provide you with an insight into the research being conducted on the safe disposal of radioactive waste. You will also experience the unique atmosphere of a fascinating underground world.

Register for a guided tour

Please contact Renate Spitznagel (see box on right for contact details) to register for a guided tour of the Grimsel or Mont Terri rock laboratories. You can also visit a Nagra drill site (details and registration).

Rock laboratories provide important insights

Underground rock laboratories provide scientists with the opportunity to conduct experiments on a large, almost realistic scale. The research includes investigating the rock and its behaviour as well as testing technical procedures. The experiments provide important information for the construction of deep geological repositories.