The Deep Mine

Miner's hut undergound Llechwedd

Learn about Sion Dolgarregddu

Deep Mine Llechwedd

Experience history 500 feet underground.

Descend nearly 500 feet underground in Europe's steepest mining cable railway and travel back 170 years in a few minutes to meet Sion your ghostly guide through the Deep Mine. Only 12 years old when he came to work at Llechwedd in 1844 Sion shares your journey through the vast chambers as he leads you through winding tunnels.

This fascinating light and sound show takes you through ten breathtaking caverns and as the story of the young miner unfolds the journey leads you deeper and deeper underground to our spectacular subterranean lake.

Experience what life must have been like for the men underground before electricity, without light but for a few candles. Imagine how easy it would have been to get lost with over 25 miles of tunnels connecting underground chambers at Llechwedd alone. Rest assured in the 21st century it is safe and easy to navigate although hard hats are essential wear!

  • The commentary is available in English, Welsh, French and German.
  • Please call in advance to enquire about arranging a non-English speaking tour for your party.
  • The tour runs throughout the day and takes about 25 minutes.

After descending into the Deep Mine the tour is approximately half a mile long. This includes walking and descending 61 well-lit, grippy steps - the train will meet you on a lower floor to take you back to the surface. However, in the busy season it may be necessary to walk back up 70 steps at the end of the tour to meet the train at a higher floor.