Underground Adventures in Wales You Can't Miss

Wales is a real adventure playground, both above ground and below. Whether you’re an adrenaline junkie or an all-round nature lover, the caves and caverns of this beautiful country are well worth exploring. So join us in our guide to the best underground adventures in Wales.
Did you know – Culture Trip now does bookable, small-group trips? Pick from authentic, immersive Epic Trips, compact and action-packed Mini Trips and sparkling, expansive Sailing Trips.
Llechwyd Slate Caverns Zip World, Snowdonia

Question: what is more thrilling than zipping down a wire across a wilderness or through a forest? Answer: zipping down a wire buried deep in an underground cave system in Snowdonia National Park in North Wales. You journey through a series of caverns on zip wires, rope bridges, via ferrata and through tunnels. Don’t worry, safety is a priority.
Dolaucothi Gold Mines, Carmarthenshire

It is said that Welsh gold is the most expensive in the world. This National Trust-managed site, in the heart of mid Wales, takes you on a journey to the Roman times. Discover how there really was ‘gold in them thar hills’ and try your luck panning. The underground tour offers a fascinating glimpse of life as a gold miner before the mine closed in the early 20th century.
Big Pit, Blaenafon, Torfaen

The valleys of South Wales are famous for their mining communities and Big Pit, part of the National Museum of Wales, offers a complete guide to the work, lifestyle, hardships and achievements of Welsh miners. The underground tour is conducted by former miners who certainly know their stuff. As you’re lowered through the pit shaft, with a helmet lamp to guide you, you are immediately immersed in the world of an almost forgotten industry.
The National Showcaves Centre for Wales, Powys

Dan-yr-Ogof is located to the south of the Brecon Beacons. This splendid cave system is full of beautifully lit caverns, stalactites and stalagmites and is extremely accessible. Comprising three large caverns, the main cavern, known as The Cathedral, is quite breathtaking. Within easy access of the cities of Cardiff and Swansea, the National Showcaves are ideally placed to enjoy a day above and below ground in the Brecon Beacons.
King Arthur’s Labyrinth, Machynllech, Gwynedd

Mid Wales has long been associated with myths and legends. King Arthur’s Labyrinth takes you on a journey to discover the story behind one of Britain’s best known legends. Enjoy a magical boat trip through this marvellous cave system while surrounding yourself with tales of dragons, giants and astounding battles.
The Black Mountains, South Wales
For a more hands-on underground experience, the Black Mountains in South Wales provide several excellent opportunities. Led by experienced cavers, explore the myriad underground tunnels and caverns underneath one of the most famous national parks in Wales. Although it can get a little tight in places, it is an exhilarating experience and allows you to see the area from a unique angle.
Bounce Below, Snowdonia

This is the stuff of dreams. In a cavern, in an old slate mine in Snowdonia, you’ll find Bounce Below – an atmospherically lit trampolining heaven. This really is a once-in-a-lifetime experience and certainly one to add too the bucket list. Safely bounce to your heart’s content while enjoying the unique surroundings.
Electric Mountain Visitor Centre, Llanberis, Gwynedd

For those interested in technology and science, a visit to the Electric Mountain Visitor Centre is a must. Located on the Llyn Padarn shores, Dinorwig Hydro Electric Power Station is within the largest man-made cave in Wales. The six generators produce 1,728 megawatts of electricity from deep within the mountain. Take a tour and learn exactly how this amazing ecopower station works.
Sygun Copper Mine, Beddgelert, Gwynedd

Historians and archaeology enthusiasts will enjoy a trip to the Sygun Copper Mine, just outside the picture-perfect village of Beddgelert in North Wales, The first miners came here with the Bronze Age and continued throughout the Roman period. The self-guided tours focus on the Victorian era, when the copper mine was at full production; it finally closed in 1903. The caverns, tunnels and water features all make this an exceptionally memorable experience.
Culture Trips launched in 2011 with a simple yet passionate mission: to inspire people to go beyond their boundaries and experience what makes a place, its people and its culture special and meaningful. We are proud that, for more than a decade, millions like you have trusted our award-winning recommendations by people who deeply understand what makes places and communities so special.
Our immersive trips, led by Local Insiders, are once-in-a-lifetime experiences and an invitation to travel the world with like-minded explorers. Our Travel Experts are on hand to help you make perfect memories. All our Trips are suitable for both solo travelers, couples and friends who want to explore the world together.?>
All our travel guides are curated by the Culture Trip team working in tandem with local experts. From unique experiences to essential tips on how to make the most of your future travels, we’ve got you covered.