The old underground quarry is called “Unknown Space”
The old mining site of Utsunomiya’s famous,Oya Stone,has now been turned into a historical museum. The exhibition features the long history of the mining since the 17th century,with many materials on display. The underground cavern,covering 20,000 sq. metres,is large enough to fit a baseball field.
With a fantastic atmosphere reminding visitors of the ruins of Ancient Rome.It is used in various scenes such as movie shooting, music videos shooting, weddings, concert, etc. due to its mysterious scenery.