Experience the world's deepest sleep: Inside Wales' underground hotel adventure

Ever thought about spending the night in a hotel nestled almost half a kilometer below the Earth's surface? This isn't a hypothetical question but a compelling proposition from the newly established Deep Sleep Hotel, strategically located in Snowdonia National Park in Wales. Getting to this reprieve isn't a simple journey; it's a rewarding adventure for those that endure, guaranteed to lull you into a deep sleep.

The amenities are nothing short of what you'd expect from any top hotel. With running water, electricity, and internet connectivity, even the discerning traveler is catered for. Accommodation includes four cabins, each furnished with two single beds, and a cave fitted with a double bed.

Keep in mind that the hotel is open only once a week — on Saturdays at 12 pm ET. Regardless of the season, the ambient temperature remains a consistent 10 degrees Celsius (around 50 degrees Fahrenheit).

Managed by a company named Go Below, known for its outdoor activities, reaching this hotel is an adventure in itself. The route to the hotel isn't as simple as it first appears. For this reason, guests meet at the company's base near the town of Blaenau Ffestiniog, where they're greeted by a guide responsible for leading them to this mind-blowing destination.

Getting to the hotel is a bit of a trek. Visitors should come prepared for a mountain trail that lasts around 45 minutes. After this invigorating trail, guests arrive at a small house, the starting point for the descent into the mine.

The path includes old staircases and bridges. There’s also a section of the route that guests traverse on a rope line. Upon completing this adrenaline-filled journey, guests are welcomed with a warm meal and can retire to their rooms for rest.

The Deep Sleep Hotel is not just a place to spend the night; it's an extraordinary experience of sleeping 419 meters underground (approx. 1375 feet). Worth noting is that the park hosting this unconventional hotel is the oldest among the three national parks in Wales. Visitors traversing this region can marvel at stunning lakes and steep rocks, plus even ascend Snowdon - the apex of the Cambrian mountains.

A single night in this uniquely deep hotel is priced at 350 pounds for a cabin (approx. $465) and 550 pounds for a cave with a double bed (approx. $729).