GLAMPING style accommodation located 1,375 feet under the mighty Eryri (Snowdonia) Mountains that takes an hour to reach has opened to guests. 

Deep Sleep is the latest creation by Go Below’s founder, Miles Moulding. It is located deep within a chamber of the abandoned Cwmorthin slate mine.

There are four private twin-bed cabins and a "romantic grotto" with a double bed. The total price for two people sharing a Grotto is £550.

A spokesperson for Go Below said: "The trip to reach it is an adventure in itself, journeying for over an hour through tunnels and shafts hewn by slate miners.

North Wales Pioneer: Guests can choose to stay in the off-grid adventure camp in one of four log cabin.Guests can choose to stay in the off-grid adventure camp in one of four log cabin. (Image: Go Below / Deep Sleep)

"One of Go Below’s experienced and qualified trip leaders will guide guests through the mine, showing them some fascinating sights and giving an insight into the history of the mine and the lives of the men and boys who worked there.

North Wales Pioneer: After descending to the Deep Sleep base, guests will have the opportunity to take in the atmosphere and enjoy an evening meal.After descending to the Deep Sleep base, guests will have the opportunity to take in the atmosphere and enjoy an evening meal. (Image: Go Below / Deep Sleep)

"After descending to the Deep Sleep base, guests will have the opportunity to take in the atmosphere and enjoy an evening meal before retiring for the deepest night’s sleep in the world."

North Wales Pioneer: After descending to the Deep Sleep base guests will have the opportunity to take in the atmosphere and enjoy an evening meal.After descending to the Deep Sleep base guests will have the opportunity to take in the atmosphere and enjoy an evening meal. (Image: Go Below / Deep Sleep)

Trip leaders will remain at the camp overnight and guide guests back to the surface in the morning.

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Deep Sleep claims to be the deepest accomodation in the world. The below the surface "remote off-grid adventure camp" is said to be deeper than London’s Shard building is tall (1,017 feet).

The title was previously held by Sala Silver Mine Hotel Suite which is located deep 508 feet underground in the bowels of an old mine.