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. Production peaked in the 1970’s, with more than a million tons of ore coming out a year. In photos I’d seen it looked like a whole hillside of factory/mine buildings, though upon arrival it was clear the glory days were gone, with only a hillside of concrete foundations remaining.

A block of masonry stands before the factory’s hillside foundation
The great machine hall of Taro mine
The derelict Taro mine lies at a generational crossing point- once a place where raw sulfides were dug from the earth, now it functions as a cosmic ray laboratory for a nearby University, capturing electrons from outer space in several large heavily wired pools. It was the first of four mines on our Iwate shopping list, ranked number 3 in all of East Japan.
Down on the Great Hall, from the third tier.
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The mist-wreathed ruins 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, all of whom were accomodated in a make-shift city in the mountains of Hachimantai park. The city was known as the ‘paradise above the clouds’ for its comparatively luxurious apartment blocks and near-constant ebb and flow of mist. That same mist nearly prevented us from finding the place at all.

The chemical pools of Osarizawa mine
Mining of gold and copper at the legendary Osarizawa mine began around 1300 years ago, with the last of the smelting facilities closing down in 1978. Now the site is owned by Mitsubishi, who run guided tours around the highlights and a museum for 1,000 yen- a tour we almost got chain-ganged into joining.

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