Remnants of Kamaishi Iron Mine
Kamaishi Mine is ranked as the second best haikyo (ruin) in all of east Japan, according to one of the haikyo books I follow. Iron has been mined there since 1727, and Japan’s first blast furnace was built there in 1857.
The great machine hall of Taro mine

The mist-wreathed ruin of Matsuo mine
Matsuo mine in the north of Japan opened in 1914 and closed in 1969. In its heyday it was the biggest mine for sulfur in the Eastern world. It had a workforce of 4,000 and a wider population of 15,000,…
The chemical pools of Osarizawa mine

