Oya Underground Mine Remains

The remains of the Oyaishi stone underground mining place were used till 1986, in order to obtain the Oyaishi stones. Since it was working about 67 years, huge underground space to the extent that 21,000 square meters, an average depth of 30 m, and one baseball field enter was made.
At the museum knowing a history of the digging of the Oyaishi stone, it displays the documents such as changes of the transportation, a tool and hand‐cut digging method from the middle of Edo era when digging began in in earnest to about 1959.

sankei.com

The best part in the museum is the remains of the underground mining place. There is space of 21,000 square meters, the deepest place is 60m below ground. The average temperature in the tunnel is around 8 degrees Celsius.

minkara.carview.co.jp

The quantity per one block of the strip-mined stone was approximately 15cm *30cm *90cm, total harvest yields from the mine were approximately 10 million blocks.

outov.com

As for the Oyaishi stone, digging is still carried out, it is used as building materials. It is a kind of the tufa which volcanic ashes and pumice are piled up 20 million years ago.

blog.livedoor.jp

This place was used as the factory and a provision store of fighter plane in the wartime period. It is used as location sites of a movie and the concert halls now, or a church exists in inside further now, and it is used also as a wedding hall.

Information

Name:Oya Underground Mine Remains (Oya History Museum)
Adresse:Oyamachi 909 Utsunomiya, Tochigi 321-0345 Japan
Access:Tobu Utsunomiya-sen Line “Tobu-Utsunomiya-eki Station” (20 minutes by bus)
Tel:(+81)28-652-1232
Price:800 yen (Adult)
400 yen (Under 15 years old)
Official site:http://www.oya909.co.jp/


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