Oya History Museum in Utsunomiya City, Tochigi Prefecture was a mining site for Oya stone.
Visitors can learn about the history of stone-crushing methods.
The mysterious atmosphere underground is hugely popular and is often used as a location for shooting films in Japan as well.
Access: 20 minutes by bus (Bound for Oya and Tateiwa) from Tobu Utsunomiya Station
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