World's deepest hotel 1,375ft underground and accessible by epic hike

Welcome to the world's deepest sleep - a hotel 1,375ft underground but only accessible by hike, zip lines and flooded chambers.

Deep Sleep is located in a disused Victorian slate mine below Snowdonia in Wales.

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 all-year-round temperature of 10C and the camp comprises of 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 first meet their trip leader at 5pm at their Tanygrisiau Base, near Blaenau Ffestiniog.

From there, they begin a 45 minute walk up into the mountains, which the team admit is 'steep at times, but remote and very beautiful at the top!'

After kitting up with headtorches, helmets, a harness and Wellington boots - adventures must bid farewell to the outside world.