200 m²- 200
- Standing
- 120
- Banquet
- 200
- Theatre
- –
- Board
- Barrier-free
- Air conditioning
- Dimmable
Price on request
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The underground event venue combines events, experiences and gastronomy. Diverse themes, supporting programmes and highlights make every occasion unique - celebrations continue into the early hours with aperitif and dinner in the tunnel.
9
Rooms
2 - 500
Persons
1'420 m²
Size
–
Response time
Robin Lymann
Eventkoordinator
100% free and non-binding
About us
Unique event and experience location inside the mountain
The event venue with wow-factor for celebrations & conferences, team-building games and many group outing ideas.
So many possibilities under one roof - that is unique in Switzerland.
Professional event technology equipped by Winkler Livecom
Celebrations possible deep into the night
In-house catering and flexible collaboration with external caterers
Gastronomy ideally combined with diverse group experiences
Various themed party ideas ready for unforgettable corporate celebrations
Pure experience: An event in the middle of the tunnel is unique. The mountain inspires and leaves a lasting memory.
Benefits
Why choose us?
With us, you can celebrate late into the night without disturbing anyone.
We offer a wide range of supporting programmes to enhance every occasion.
We specialise in staging themes in a unique way
Located in the triangle between Sargans, Mels and Flums, we are easily accessible from all directions.
Rooms
7 rooms for up to 500 guests
Capacity depends on the seating layout.
Guests & seating
All500
200 m²
220 m²- 200
- Standing
- 135
- Banquet
- 200
- Theatre
- –
- Board
- Barrier-free
- Air conditioning
- Dimmable
Price on request
102 m²- 80
- Standing
- 54
- Banquet
- 80
- Theatre
- –
- Board
- Barrier-free
- Air conditioning
- Dimmable
Price on request
Offers
Offers at a glance
CHF 120 · ab
Are you looking for a wedding venue in Eastern Switzerland that offers more than just a beautiful backdrop? Nestled in the stunning mountain landscape of the Heidiland, a venue full of atmosphere and possibilities awaits you—for a wedding you’ll never forget. Whether it’s an outdoor wedding ceremony, a cocktail reception, or a celebration with a wow factor: you design your day exactly as you wish. Our experienced team will guide you personally and with great attention to detail, so you can relax and enjoy your big day.
CHF 120 · ab, pro Person
If your company books a Christmas dinner with us this year, you’ll receive our Christmas village free of charge as a pre-dinner reception venue before heading to our unique cavern for a delicious dinner. You can look forward to an atmospheric celebration with winter music and impressive effects in the festively lit tunnel. The evening begins with mulled wine and delicious appetizers in the Christmas Village at the “Glück auf” Cavern—including entertaining curling. Afterward, you’ll enjoy a Christmas dinner of your choice in our event cavern, surrounded by enchanting winter decorations—an unforgettable celebration in a special atmosphere.
CHF 990 · ab Pauschal
Looking for a company outing with action, fun, and real team spirit? The Hagerbach Challenge offers an active experience inside the tunnel and is ideal for companies, clubs, team-building events, or bachelor parties. In small groups of up to 10 people, participants take on sporty, creative, and brain-teasing challenges across 8 varied stations. Teamwork, strategy, and fun are key – creating an unforgettable experience for groups of up to 60 people. Accompanied by an experienced guide, you’ll explore the mysterious tunnel and enjoy a truly unique team adventure together.
CHF 50 · ab Pro Person
Conference underground, exceptional experience above ground: state-of-the-art technology from Winkler Livecom, versatile rooms for 4 to 200 people, and tailored supporting programs provide the ideal conditions for your seminar. Coffee breaks, catering, and experiences in the unique tunnel system ensure well-being and focus. Unique in Eastern Switzerland: The tunnel is also suitable for hands-on demonstrations—year-round and regardless of the weather. Close to the pulse of the times, yet far removed from everyday life.
CHF 495 · pro Gruppe bis 25 Personen
Looking for ideas for a company outing in Switzerland? You’ll find what you’re looking for here. We present: An exciting guided tour including an immersive cinema experience in an SBB railcar An offer for groups of up to 100 people. Our guided tours provide fascinating insights into the history of our company and showcase landmark projects from the past five decades. You’ll learn interesting facts about tunnel construction, technology, and their development. The focus is on forward-thinking approaches to how underground space can be used in the future for sustainable energy generation, data storage, or urban development. This impressive group experience builds on our proven standard tour and is complemented by the immersive cinema in the SBB railcar. The immersive cinema in the SBB railcar: Here you’ll learn how to respond correctly in the event of a tunnel fire. You’ll then enter a second decommissioned SBB railcar, where you’ll walk through theatrical smoke and experience firsthand what such a situation might feel like.
CHF 1,430 · Paschal bis 20 Personen
Combine your team event with a hands-on fire extinguishing course in collaboration with K.A.B. Brandschutz. This program not only imparts knowledge but also builds confidence in taking appropriate action in an emergency. During the hands-on portion, your employees will learn how to properly handle fires and the targeted use of fire-fighting equipment such as fire extinguishers and fire blankets. This ensures that important fundamentals are taught in a practical manner in accordance with accident prevention guidelines. Experience shows that well-trained individuals react faster and more effectively in an emergency. The content is tailored specifically to your company—for maximum benefit and lasting impact.
CHF 30 · ab, pro Person
Turn your event into an unforgettable experience: Starting at just CHF 30 per person, our in-house event team creates stunning table and venue decorations—tailored to your theme. Themed parties bring life to any corporate celebration: Guests immerse themselves in the experience, dress the part, and actively participate in the event. It’s exactly these kinds of events that leave a lasting impression. At the VersuchsStollen Hagerbach, we create entire worlds of experience with unique spaces and projections on rock walls. From table decorations and lanterns to wall displays—we deliver your concept “ready to go” and take care of everything on-site. Whether it’s a tried-and-true theme or a new idea: We bring your vision to life creatively and with great attention to detail.
CHF 200 · ab, pro Person
Showcase your brand where attention is guaranteed: in the unique setting of the VersuchsStollen Hagerbach. Because as important as the message is, the location where it is conveyed is just as crucial. In a world full of distractions, you need experiences that stand out. Our extraordinary venue does exactly that—ensuring that your message is not only noticed but also leaves a lasting impression. Whether it’s a product launch, a customer event, or a live marketing event: We offer you the perfect setting, including customized catering and comprehensive support for the execution. Discover the virtually unlimited possibilities for your impactful presentation right here on site.
Prices
Prices at a glance
Minimum consumption
1'500 CHF
Amenities
What this venue offers
54 features in 6 categories.
Rooms & facilities
6Rooms
9 rooms available
Rollstuhlgerecht
Yes
Indoor & outdoor
Location & arrival
4Parking
80 free · 180 chargeable
Remote area
Position of the Location
In the mountains
Position of the Location
Food & drink
11In-house catering
Event catering
European
Cuisine/Style
Asian
Cuisine/Style
Venue & atmosphere
13Hangar / Shipyard
Type of location
Party Venue
Type of location
Seminar / Education center
Type of location
Suitable for
18Corporate Event
Type of event
Concert
Type of event
Party
Type of event
Services & languages
2English
Language
German
Languages
Reviews
James
summarizes
Customers consistently praise this unique underground venue for delivering exceptional events and experiences. From themed weddings to corporate celebrations, the professional team creates unforgettable moments with creative support and flawless organization. The stunning underground Christmas village, impressive demo explosions, and atmospheric dining spaces provide a truly extraordinary setting. Guests rave about the excellent food, attentive service, and the venue's ability to adapt to any occasion.
What customers confirm
Exceptional Team Support
Unique Underground Setting
Flawless Event Organization
Outstanding Food Quality
Unforgettable Experiences
Marcel Wildhaber
March 2026
Ich feierte ein tolles Geburtstagsfest im Versuchsstollen Hagerbach. Von der Planung, Organisation, dem Catering und der Location waren meine Gäste und ich begeistert! Nochmals herzlichen Dank an das ganze VSH-Team!! Es bleibt unvergesslich!!
via Google
Gianfranco Gambaro
February 2026
Wir haben unsere Star Wars Motto Hochzeit hier gefeiert und es war einfach perfekt: Der Event-Verantwortliche hatte sichtlich Freude an der Idee und unterstützte uns von A bis Z mit tollen Einfällen und kritischem Feedback. Wir haben uns willkommen und abgeholt gefühlt. Die Infrastruktur bzw. die Möglichkeiten vor Ort sind riesig und für wirklich jeden Anlass anpassbar. Das Essen hat die Erwartungen bei Weitem übertroffen! Auch die Gäste waren begeistert: Die besten Schinkengipfeli und die beste Pfeffersauce, die wir je hatten. Auch das Service-Personal hat für viel Lob gesorgt: Freundlich und sehr aufmerksam. Zu guter Letzt war auch das Administrative, das mit einem solchen Anlass einhergeht, mustergültig simpel aufgesetzt, sodass wir uns wirklich auf die eigentliche Hochzeit konzentrieren konnten. Nochmals ganz, ganz herzlichen Dank an das super Team. Dank euch wurde unsere Hochzeit zu einem unvergesslichen und einmaligen Spektakel!
via Google
Eragon
February 2026
Geiler Ort , war hier bei einer Box Veranstaltung kann ich nur empfehlen
via Google
Greta Pappa
January 2026
Definitely a unique venue. Our guests always say it’s the most interesting location they’ve experienced - it makes a strong impression and is genuinely memorable. Beyond the venue itself, Michael, Jan, and the team are friendly, reliable, and very supportive. They stepped in without hesitation to help resolve last-minute organisational issues, which made a real difference.
via Google
Media
Photos · Videos · 3D tours
FAQ
Frequently asked questions
Everything you need to know about your event.
Our heated event rooms, including the event cavern and our seminar rooms, allow you and your guests to dress appropriately for your celebration. If you have planned activities outside these rooms in the tunnel, we recommend sturdy footwear and a jacket, as it is usually around 15 degrees there, the terrain is occasionally uneven and the floor is not as clean as in our facilities.
Contact
Location and contact person
Karte wird geladen...
VersuchsStollen Hagerbach AG
Polistrasse 1, 8893 Flums, Switzerland
3.3 km
Mels
3.5 km
Highway A49
66.8 km
Flughafen Friedrichshafen (FDH)
Robin Lymann
Eventkoordinator
100% free and non-binding
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