Hanaoka mine
Ōdate, Japan
The Hanaoka mine (Hanaoka Kōzan) was an open-pit mine with major deposits of "black ore" (sphalerite and galena, a mixture of zinc, lead, gold, silver, and other precious metals), in the village of Hanaoka, Kitaakita District, Akita Prefecture in the Tōhoku region of northern Japan in. The area is now part of the city of Ōdate.
Mine data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).