Grimsel rock laboratory
Place where international research is conducted in the granite of the Aar Massif
«Going underground» and experiencing research up close
The Grimsel Test Site is a place where international research is conducted in the granite of the Aar Massif. It is situated at an elevation of 1,730 metres in the municipality of Guttannen.
For 35 years now, the National Cooperative for the Disposal of Radioactive Waste (Nagra) has been working – together with 20 international partners from 12 countries – to investigate key issues related to the safe disposal of Switzerland's radioactive waste in this 1 kilometre-long tunnel system.
«Experience» this impressive place where science happens before your very eyes in the rugged mountains of the Grimsel region. Nagra employees provide visitors with a clear and concrete explanation of the complex world of international deep geological repository research. It is a journey into seemingly infinite periods of time – into a dimension that extends far beyond human imagination.
Visits to the Test Site
Between May and October for groups of 10 people or more possible between 8.00 am and 4.00 pm. A perfect excursion for schools and universities. Languages: German, English and French. The guided tour is free of charge.
+41 56 437 12 82