Deep Sleep is located in a disused Victorian slate mine below Snowdonia in Wales ... at 5 pm at their Tanygrisiau Base, near Blaenau Ffestiniog. From there, they begin a 45-minute walk up into ...

Bleanau Ffestiniog is a town in the county of Gywnedd. It is the slate capital of North Wales, and while the mining of slate is not at the level it once was it is still what the town is known for.

Situated near the former mining town of Blaenau Ffestiniog, guests booking a stay ... daylight and delving into the depths of an ancient slate mine. The Deep Sleep website describes the descent ...