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Photo: 紫煙 · CC BY-SA 3.0 · Wikimedia Commons

Kurogane Onsen

Fukushima · くろがね温泉

Kurogane Onsen is a hot spring town in Fukushima, Japan. The water leaves the ground at 66.7°C, hot. It measures pH 2.6 — acidic. Officially the water is classed as acidic spring.

Getting there

From Tokyoabout 3 h

CarLast stretch on foot

JR PassCovers the train

1. Train to Nihonmatsu Station (JR)
2. Local bus, about 25 min, then on foot along a mountain trail

Fly into Haneda or Narita. Times are rough estimates worked out from station locations, not a timetable — check the exact route on Google Maps.

The water here

Acidic spring 酸性泉

Strongly acidic, sometimes below pH 2. It stings on cuts and is not for long soaks.

More photographs

From Wikimedia Commons. Tap a photo for the photographer and licence.

Things to see nearby

Places from Wikidata, photographs from Wikimedia Commons. Distances are in a straight line from the town.

With tattoos

Many public baths still turn away visible tattoos, and the rule is set by each bath, not by the town. The reliable way round it is to bathe privately: a room with its own open-air bath, or an inn with a private bath you can book for yourselves.

More on tattoos and onsen

Where to stay

Opens Rakuten Travel, which lists inns in English. Onsen Guide earns a commission if you book through these links, at no extra cost to you.

Hot spring towns nearby

Similar water elsewhere

Towns further away with the same kind of water — useful if this one is hard to reach or fully booked.

The numbers

Water temperature

66.7°C

pH

2.6 (acidic)

Address in Japanese

福島県二本松市

Figures from the town's Japanese Wikipedia article.

Where it is

37.6323, 140.2931 — open the map

Read more

Japanese Wikipedia