Japan's underground wonder
Large numbers of tourists are attracted to a fantastical space in the Oya quarry which was created over 70 years of drilling.
ONE step inside the former quarry site at the Oya History Museum in Utsunomiya and you will feel as if you are exploring ancient ruins.ed to be quarried at the site.
Oya stone, a type of tuff stone that can be seen across the city's Oya district, used to be quarried at the site.
Lured by the prospect of cold air, I went down a dark set of stairs at the old quarry and found myself in a vast underground space where there are a group of stone pillars, each one 10 meters (about 32 feet) wide.
Share with us your feedback on BT's products and services