The Hagerbach Test Gallery (VSH) opens its doors to the general public as part of the 50th anniversary of the Swiss Tunnelling Society (STS). Interested visitors can view and experience a large number of underground construction sites and existing underground structures spread throughout Switzerland. 

The multitude of tunnels, caverns, test fields, laboratories and training rooms in the VSH have provided ideal conditions for research, development, testing, 1:1 trials and events of all kinds for over 50 years. A fantastic constellation that is unparalleled. Specialists from all over the world use the VSH as a training camp and research laboratory.

More information about the "Insight into the Underground" on their eventpage.


On this "Innovation Day", the public gets an insight into the world UNDERGROUND. Together with our partners, we present current activities for the benefit of future generations, innovative ideas and projects. 

  • Experience live demonstrations by our exhibitors and partners directly in the gallery
  • Listen to exciting lectures
  • Explore the gallery on your own along a set route
  • Take a ride on our own tunnel train
  • Experience first-hand what it feels like when a trainwagon fills with smoke
  • Find out more about our construction materials testing laboratory
  • Enjoy all-day catering in our cosy restaurant
  • ... and more

There is certainly something for everyone!

Teaser Innovation Day