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Towada-Hachimantai NP, Iwate
Claim this place to tell your story your way.
Amihari’s sulfur water can turn blue-white and strongly scented in spring through autumn, then nearly clear and faint-smelling in winter. Snowmelt, rain, and stream-water mixing shift the sulfur chemistry behind the change.
Local lore links Amihari to Koiwai Farm: railway pioneer Inoue Masaru reportedly spotted Shizukuishi’s barren plain while traveling to the bath in 1888 and imagined cultivating it. Koiwai Farm dates his vision to June 12.
An illustrated Shizukuishi guide says bathing at Amihari was once forbidden because it supposedly brought rain and cold that damaged crops. It even records a rule-breaker being caught by Morioka Domain officials in 1827.
The inn’s “jikko” menu honors a Shizukuishi custom: at weddings, funerals, planting, and harvest gatherings, each household carried homemade dishes in a stacked box so everyone could share a communal meal.
Sennyo means “celestial maiden”: steam beside Kame Falls was likened to her flowing robe. In the 1960s, staff found the falls and built the rock bath by hand, since heavy machinery could not reach the ravine.
A local origin tale says a hunter chasing deer into these woods spotted a wisp of hot-spring steam. The story survives in 鹿追足湯 (Shikaoi Ashiyu), literally “Deer-Chasing Footbath.”
By the early Meiji era, more than 3,000 bathers a year braved Amihari’s steep trail, with their torches said to light the way at night. An 1882 guide map charted routes to the bath and Mt. Iwate.
A spring at an old explosive crater on Inukurayama sends hot water nearly 2 km through forest and across streams to Amihari’s five baths—from hotel pools to a footbath and a waterfall-side outdoor pool.
Resort records say poet Kenji Miyazawa soaked at Amihari after climbing Mt. Iwate. His literary connection to nearby Koiwai Farm makes the bath a meeting point of two famous strands of Shizukuishi’s history.
Mineral deposits can clog Amihari’s spring pipe, so crews clean it several times a year; winter work faces avalanche danger. A soak here depends on tough, mostly unseen maintenance high on the mountain.
Local tradition dates Amihari’s discovery to the Wadō era (708–715), over 1,300 years ago. Japan’s official park guide calls it “said to be” Iwate’s oldest spring, marking the story as tradition rather than a documented modern date.
