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Experience underground adventures across Snowdonia. For a closer look, pick up a Snowdonia Pass and enjoy reduced entry costs to every one.

Corris Mine Explorers


Take a journey into the past with Corris Mine Explorers as you explore the workings of a former slate mine. Looking around at the abandoned tools, candles, machinery and even the odd cigarette packet, you’d be forgiven for believing that the workers clocked off minutes, rather than decades, ago.

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Electric Mountain


With its massive machinery buried in the heart of a mountain, Electric Mountain resembles the lair of a North Wales-based James Bond villain. It’s actually the amazing Dinorwig Power Station, a technological marvel housed in the largest man-made cavern in Europe. A tour of this awesome subterranean facility is a truly electrifying experience.

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King Arthur's Labyrinth


Take a boat trip into Wales’ legendary past at King Arthur’s Labyrinth, as a mysterious boatman takes you through a waterfall to a subterranean land of myths and magic. Hear stories of giants, kings and dragons in the dark space beneath Snowdonia as you traverse a maze of tunnels and caverns. Dramatic sound and light shows bring these ancient tales to life in a time-travelling adventure for all the family.

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Llechwedd Slate Caverns


Ride Llechwedd Slate Caverns’ cable railway (the steepest in Britain) to the depths of a Victorian slate mine 500 feet under the earth. Local guides, many of them former slate workers, take you on a trip through Snowdonia’s industrial past. Light projections, enhanced reality technology and explosive special effects add to the experience, putting you in the shoes of the men and boys who once worked in its inky depths.

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Sygun Copper Mine


Explore another remnant of Snowdonia’s industrial past with a self-guided audio-visual tour of a Sygun Copper Mine. The large colourful chambers are packed with stalactites, stalagmites and veins of copper ore flecked with gold, silver and other precious metals. Our Bronze Age ancestors first started digging for copper here, starting off a sequence that continued through Roman times and in the Industrial revolution before the mine was eventually abandoned in 1903. The copper may be largely be gone, but there’ still plenty of history buried here.

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