Deep Sleep is located in a disused Victorian slate mine below Eryri – known to many as Snowdonia.
Guests can stay in log cabins or slate-roofed chambers dubbed ‘the deepest sleep in the world’.
The unique underground hotel sees people venture down through an abandoned Victorian slate mine to reach the remote off-grid camp.
It has a year-round temperature of a comfortable 10°C and the camp comprises four private twin-bed cabins and a ‘romantic grotto’ with a double bed.
But the adventure begins with a one-hour hike – involving zip lines, steep and vertical terrain and flooded chambers.
Visitors meet their trip leader at 5pm at the Tanygrisiau base, near Blaenau Ffestiniog.
From there, they begin a 45 minute walk up into the mountains, which the team admits is ‘steep at times, but remote and very beautiful at the top!’
After kitting up with headtorches, helmets, a harness and Wellington boots – adventurers bid farewell to the outside world.
The journey on foot to the mine entrance and through the mine to the Deep Sleep involves two hours or more of walking, scrambling, ducking and balancing.
After the treacherous route underground, through ancient miners stairways, decaying bridges and scrambles, guests reach their lodgings and are provided with a warm drink, an ‘expedition-style meal’ and information about the mine in which they are staying the night.
Part of the journey requires you to pull yourself along a rope above a flooded cave. (Image: Go Below / SWNS)
The price is £375 for a cabin or £575 for the Grotto, each of which are for two people. It includes an evening meal, breakfast in the morning and hot and cold drinks. Full information can be found at www.go-below.co.uk/Deep-Sleep.
Children aged 14 and over are welcome to accompany adults to Deep Sleep and warm clothes are recommended.
All electric lighting and wi-fi – yes it offers the internet underground – is low-voltage and powered from 12v batteries.
According to the Go Below team, these batteries are charged by the force of falling water within the mine itself using micro-hydro turbines.
“There is no grid connection,” they said. “So Deep Sleep is self-powered using the mines own natural water courses.
“A Euro V compliant diesel generator on the surface provides backup power to charge the batteries, if there hasn’t been much rain.”
Running water from taps that come from a spring within the mine itself provides ‘excellent quality’ rehydration.
