Deep Sleep - The Deepest Hotel In The WorldDeep Sleep  

United Kingdom's Go Below offers adventure-packed cave tours in North Wales. But what made the company world famous is the unique accommodation set 1,375 feet (419 meters) below the ground level in an abandoned Victorian slate mine.

Snowdonia's disused slate (a type of rock commonly used in construction) mines are the largest of its kind in the world. Mining started in 1810 and works continued until the end of the 1990s.

The previously flooded and abandoned mine is a labyrinth of tunnels that go through impressively large caverns, sometimes stretching over 330 feet (100 meters) in each direction.

Go Below Underground Adventures in Tanygrisiau

The entrance of the old abandoned mine is a 45-minute hike from the Tanygrisiau base near Blaenau Ffestiniog. That's before you can enter the mystical caves.



Tanygrisiau Trekking

After putting on the safety helmet, miner's lamp, harness, and Wellington boots (classic style waterproof boots made of rubber), you are ready to enter the underground world.



Tanygrisiau Cave

Although the modified route is much safer than before, it still takes an hour to trek to reach the underground hotel.



Abandoned mines in the heart of Snowdonia

Along the way, you can see the various relics of this 19th-century mine, old mine cars, decaying tracks, and bridges.



Go Below Cave Bridge

Go Belo's five, six, and seven-hour-long adventures vary in difficulty and depend on how much adrenaline you want to run through your veins.



Snowdonia's disused slate mine deep blue lake

While the starter tour with a minimum age requirement of 10 has relaxing boat trips on deep blue lakes, the most extreme offer is only for adults and includes (secured) free falls and a run on the Goliath zip line.



Rope climbing above the underground lake

The course is run by professional and friendly hosts, with safety being their number one priority. The guides' "adventure starts where daylight ends" t-shirts forecast an experience you will not likely forget.



Climbing in Snowdonia's cave

Some sections also require rock climbing skills.



Underground Cave Lake In Snowdonia

Across the mine, suspended cables connect parts to get you safely (and really fast) from one side to the other. The nail-bitingly exciting zip lines glide over lakes and black abyss so deep you can barely see the bottom.



Go Below Cave Adventures Zip Lining

The majestic subterranean world has caves as large as in Europe's most famous salt mine in Wieliczka, but without the decorations.



Abandoned mining equipment

Abandoned miner's stuff

During your journey to the underground, you will see rusty mining equipment and even water (or spirit?) bottles of Victorian time workers.



Go Below Zipline

The world's longest underground zipline


The aptly named Goliath is the longest zip wire that runs in a cave spanning 420 feet (130 meters).



Goliath Zipline

If you want to hear the echo of your screams and shouts, you should opt for the Ultimate Xtreme adventure - the only one to offer a ride on the Goliath zipline.



Go Below Underground Adventures - Goliath Zipline

The world's deepest hotel


The company's founder, Miles Moulding, came up with the brilliant idea of creating the world's deepest hotel in the Cwmorthin quarry. Miles is an outdoor adventure enthusiast who thought setting up a cave hotel deep underground would make perfect sense for two reasons.


First, after a long day exploring the caverns, you wouldn't need to return home but have a room for the night on the spot.


And second, the cave's depth meant it would break a record and become the world's deepest hotel. Now, that's a title you can brag about!


So, after careful planning and setting up new and more accessible routes, he and his team built a log cabin hotel for ten people at the bottom of the mine.



Go Below's Deep Sleep Hotel

Unlike in other cave hotels, there is no elevator that will take you down. Part of the experience is the hour-long journey through tunnels and shafts carved by miners to reach the site of Deep Sleep. On the only way to the hotel, you must slowly descend the newly rebuilt rope ladder.



The World's Deepest Hotel

Once you arrive at the camping base, you are welcomed by a hot beverage, and the team provides you with an expedition-style meal (which can be vegan or vegetarian upon request).



Deep Sleep Hotel Camping Picnic Table

Deep Sleep Hotel Food

When you are finished with the food and chatting at the picnic table, you can retire to your comfy room and enjoy the deepest sleep you have ever experienced.



Deep Sleep Hotel Bathroom

Deep Sleep Hotel Cottage Room

The beds have thick blankets to keep you warm, as the temperature at this depth is only 10° Celsius (50° Fahrenheit).



Deep Sleep Hotel Twin Bed

The underground hotel is open only once per week on Saturday nights.



Deep Sleep Hotel Grotto

Depending on your budget and taste, you can choose to sleep in a lodge-style cabin or a grotto with raw rocks surrounding you and the soft light of the candles.



The morning starts with a wake-up call at 8 am, and after a quick breakfast, the staff will guide you back to the surface, so you can go and tell your friends and family that you slept in the world's deepest hotel!



The deepest cave hotels


So, how does Go Below's cave hotel compare to the others?


The Grand Canyon Caverns Suite in Peach Springs, USA, has a room 220 feet (67 meters) underground.


Sweden's Sala Silvermine is home to a bedroom carved into solid rock 509 feet (155 meters) below the surface.


That adds up to 866 feet (264 meters) difference between the world's first and second deepest hotel.


To put it into context, if the 1,375 feet (419 meters) Deep Sleep was not underground but in the sky, it would be as tall as Jin Mao Tower - the 35th tallest building in the world. In British, that's 3.5 Big Bens stacked on each other.



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Conwy Falls Forest Park Pentrefoelas Rd, Betws-y-Coed LL24 0PN, United Kingdom