Historic Site Osarizawa Mine (Kazuno City, Akita Prefecture)

One of the largest old mine sites in Japan with 1,300 years of history

The Historic Site Osarizawa Mine, designated as a Modern Industrial Heritage site, is said to have been opened approximately 1,300 years ago. Inside the tunnel, bedrock dating back about 9 million years is exposed, allowing visitors to closely experience the remains of what was once one of Japan’s largest copper vein mining sites. It is also said that gold produced at the Osarizawa Mine was used for the Konjikidō Hall of Chūson-ji Konjikidō in Hiraizumi and for the Great Buddha of Tōdai-ji Daibutsu in Nara.

From April 2026, the site will operate as a social studies field trip facility and will be open by advance reservation only.

General Information

Address
秋田県鹿角市尾去沢字獅子沢13-5
Prices
This facility is available exclusively to groups (educational institutions, training programs, etc.) visiting for social studies purposes and operates on a reservation-only basis.

Tourist Tunnel Admission Fee:
Adults: ¥1,500
High School Students: ¥1,100
Junior High School Students: ¥1,000
Elementary School Students: ¥900
School group supervisors are admitted free of charge.

Guided tours are mandatory. Up to two guides can be assigned at one time. For groups of 60 or more, please consult us in advance. (One guide can accommodate approximately 30 participants.)

Reservations must be made at least one month in advance. Cancellation fee: 100% from the day before the visit.
Opening Times
Open by reservation only.
Tunnel tours are available from April 1 to November 30, Monday through Saturday, 9:00 a.m. – 4:00 p.m.
Closed on Sundays, public holidays, and during the winter season.
Directions
About 10 minutes by car from the Kazuno-Hachimantai IC on the Tohoku Expressway, 10 minutes by car from JR Kazuno-Hanawa Station
Car Park
Yes
Official Website
http://www.osarizawa.jp/
Duration
Tourist Tunnel Tour: 40 minutes to 1 hour

Contact

Telephone Number
0186-22-0123
Fax Number
0186-23-3217