Ultimate Xtreme: Go Below

Go Below: North Wales

Available until 21 January 2026

Book now from £109.00

What else is on at Go Below: North Wales?

Step into the depths of Snowdonia with Go Below Underground Adventures in North Wales

Step into the world beneath the mountains with Go Below Underground Adventures, your go-to for underground caving in Wales! Featuring activities for first-time explorers and caving connoisseurs, head to the heart of Snowdonia and swap your everyday for the extraordinary. 

Go Below Underground Activities: Ultimate Xtreme Course

Conquer the most intense underground adventure with Go Below, as you descend into the depths of Snowdonia and tackle record-breaking obstacles.

  • Age Restrictions: 18+
  • Duration: Approx. 7 hours
  • Difficulty: Tough
  • Abseils: 1-3
  • Ziplines: Lots
  • Traverses: 14
  • Ladders: 2
  • Bridges: 3
  • Goliath Zip: Yes
  • Boat Section: No
  • Freefall Jump: Yes
  • Meeting Point: Tanygrisiau station (Ffestiniog Railway), Tanygrisiau, Blaenau Ffestiniog LL41 3TP

What's On the Ultimate Xtreme experience with Go Below Underground Adventures?

After getting roped up and ready at your base, you'll experience the most intense underground activities that the UK has to offer, including:

  • Nine underground zip lines, including Goliath - the longest underground zip line in the world at 130 metres
  • The deepest underground zip line on Earth, with 1,230 feet of solid rock above
  • The world’s first underground zip ride, where you’re gently lowered through a vast cavern
  • A 70-foot freefall jump into the abyss, powered by a custom braking system
  • Abseils, traverses, climbs, and rope bridges through colossal chambers
  • A descent to 1,375 feet below the surface - the deepest publicly accessible point in Great Britain!

Get ready to satisfy the thrill-seeker inside you with Go Below!

Enjoy underground caving in North Wales

Go Below Underground Adventures aren't just a tour provider - they're pioneers of creating some of the most exciting activities in North Wales. Whilst they provide the experience, knowledge and safety gear to ensure you have a fantastic day underground, all you need to bring is your sense of adventure!

Plus, with small group sizes, you'll gain the added benefit of having a truly personal experience with an expert guide, so you get the chance to receive professional tips, tricks and techniques to help enhance your journey.

Whether you want to explore the world below or dive into something new, Go Below have something for everyone. Book tickets today and have them delivered instantly via email & SMS. 

Location

Tanygrisiau station (Ffestiniog Railway)

Tanygrisiau,
Blaenau Ffestiniog,
LL41 3TP
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How to find us

Please note: The meeting points for your Underground Adventures may vary. Please ensure you are heading to the correct location for your chosen activity. 

Meeting Points:

  • Challenge: Go Below Underground Adventures, Conwy Falls Conwy Falls Forest Park, Pentrefoelas Rd, Betws-y-Coed LL24 0PN
  • Hero Xtreme: Tanygrisiau station (Ffestiniog Railway), Tanygrisiau, Blaenau Ffestiniog LL41 3TP
  • Ultimate Xtreme: Tanygrisiau station (Ffestiniog Railway), Tanygrisiau, Blaenau Ffestiniog LL41 3TP
Facilities
  • Parking
  • Toilets
More Info
Are Go Below Underground Adventures wheelchair accessible?

Due to the nature of the trips, Go Below activities are not wheelchair accessible. 

Are there any age restrictions on Go Below Underground Adventures?

To ensure the safety and wellbeing of participants, Go Below operates by a strict age-limit policy.

  • Challenge: 10+
  • Hero Xtreme: 14+. Under 18's require one-to-one supervision from an adult)
  • Ultimate Xtreme: 18+ only
What should you bring to Go Below Underground Adventures in Wales?

The team recommend bringing a hands-free backpack with snacks, water and any personal items packed. 

Where is the meeting point for my Go Below activity?

Please note: The meeting points for your Underground Adventures may vary. Please ensure you are heading to the correct location for your chosen activity. 

Meeting Points:

  • Challenge: Go Below Underground Adventures, Conwy Falls Conwy Falls Forest Park, Pentrefoelas Rd, Betws-y-Coed LL24 0PN
  • Hero Xtreme: Tanygrisiau station (Ffestiniog Railway), Tanygrisiau, Blaenau Ffestiniog LL41 3TP
  • Ultimate Xtreme: Tanygrisiau station (Ffestiniog Railway), Tanygrisiau, Blaenau Ffestiniog LL41 3TP
Is there food and drink available at Go Below Underground Adventures?

You'll need to bring your own food and drink with you. There will be opportunities in the trip to sit down and enjoy your lunch. 

There is also food available at the Conwy Falls Cafe, near the Conwy Falls meeting point for Go Below's Challenge experience.