Get a local bus to the village where this museum is located from Utsunomiya JR station. It's a beautiful location with a river and places for a picnic with Oya stone cliffs in the background. The museum itself is the entrance to the Oya stone mine, a cave that is awe inspiring in the extreme. A leaflet is available in English to add information about the fascinating use of this green stone. Don't forget to visit the statue outside and a little hidden gem .