Juchlistock, Alpine summit in Interlaken-Oberhasli, Switzerland

Juchlistock is a 2594 m summit in the Bernese Alps, in the municipality of Guttannen. It forms the eastern end of the ridge between the Bächlital to the north and the Grimselsee (1908 m) to the south. West of it rise the Brünberg (2982 m) and, behind that, the Bächlistock (3246 m).

The Grimsel rock laboratory of Nagra has been operating beneath Juchlistock since 1984, reached by a tunnel from the Grimsel Pass road. The mountain itself is the eastern end of the ridge between the Bächlital to the north and the Grimselsee to the south, with the Brünberg rising to its west.

Below the Juchlistock, since 1984, the Nagra rock laboratory at Grimsel has been cut into the granite, where research into storing radioactive waste is carried out. Visitors to the Grimsel Pass road see the mountain above the Räterichsbodensee, and the laboratory tunnels run beneath its slopes.

The summit lies east of the Grimsel Pass road and the Räterichsbodensee, on Guttannen municipal land. The Grimsel rock laboratory of Nagra is located beneath the mountain, so the area also has underground infrastructure. Access is on foot; the terrain is steep and rocky, and weather at this elevation can change quickly.

Since 1984 the Nagra Grimsel rock laboratory has operated beneath the Juchlistock, reached through tunnels driven into the mountain. Visitors on the Grimsel Pass road see only the summit above, not the test galleries carved below it for research into radioactive waste storage.