Go Below Underground Adventures
About
Nestled in the heart of Snowdonia, Go Below Underground Adventures offers four adrenaline‑driven experiences that bring you deep into the ancient slate mines that once powered the region’s iron industry. Whether you’re chasing the thrill of a half‑day underground challenge, tackling the full‑day Hero or Ultimate Xtreme trips, or surrendering to the world’s deepest underground sleep in the Deep Sleep cabins, each adventure is guided by seasoned instructors who bring safety, history and a sense of wonder to every tunnel, cavern and waterfall. With state‑of‑the‑art safety equipment, dedicated radio support and a zero‑incident record, Go Below guarantees a heart‑pounding, unforgettable journey for visitors of all ages. Three‑to‑four‑hour hikes bring you to the mine entrance, where a 45‑minute ascent to the 1,375‑foot‑deep chamber awaits, complete with cosy cabins, gourmet meals and an all‑night stay for the Deep Sleep experience. All six trips are available year‑round, with extra runs during the summer months, making it a perfect destination for adventure seekers, families, and history enthusiasts alike. On any given day, visitors can choose from the classic 4‑hour underground challenge, the full‑day Hero Xtreme and Ultimate Xtreme trips, or the unique overnight Deep Sleep experience that lets you sleep beneath the Welsh mountains. The venues are easily accessible from the Conwy Falls Base on the A5 and the Tanygrisiau base near the Ffestiniog Railway, with nearby cafés, toilets and free Wi‑Fi to keep you comfortable. Whether you’re looking for a heart‑thumping thrill, a historical dive into Wales’ mining past, or a chance to experience the serenity of sleeping two thousand feet below the surface, Go Below offers a curated adventure that blends safety, excitement, and the unique allure of Snowdonia’s underground world.
Highlights
- Deepest Underground Sleep
- Historic Abandoned Mines
- Thrilling Underground Challenges
Must-See Areas
Good to Know
Good for
Best time to visit
June to September for mild weather, though all experiences are offered year‑round
Frequently Asked Questions
At a glance
- Typical visit: about 3 hours
Tickets & pricing
Go Below Challenge Trip
£75.00
Go Below Hero Xtreme Trip
£109.00
Go Below Ultimate Xtreme Trip
£129.00
Deep Sleep Cabin (2 people)
£399.00
Deep Sleep Grotto (2 people)
£599.00
Deep Sleep Grotto Xclusive (2 people)
£799.00