Nyūtō Onsen-kyo

Seven springs on the shoulder of Mt. Nyūtō

Nyūtō Onsen-kyo sits deep inside Towada-Hachimantai National Park, on the western flank of Mount Nyūtō in inland Akita. The kyō is not one resort but seven independent inns, each with its own source and its own building: Tsuru-no-Yu, Taenoyu, Magoroku, Kuroyu, Ōgama, Ganiba, and the Kyūkamura hotel. Tsuru-no-Yu is the oldest, with documented use as a bathhouse from 1638, the year the second lord of the Akita domain, Satake Yoshitaka, came up the valley for a therapeutic stay. The thatched main lodge that survives today, the honjin, is the building where the samurai guarding him slept; it was registered as a tangible cultural property in 2010. Inn records run continuously from 1688. The name itself dates to 1708, when a matagi hunter found an injured crane healing in the water and the older name Tazawa-no-yu was retired in its favour.

Wood, snow, and milky sulfur

The kyō still reads as a chain of mountain jisuiyado rather than a town. Tsuru-no-Yu's outdoor pool, a wide milky-blue kon'yoku shared between men and women under open sky, is the image most travellers carry home, but each inn pours a different water: clear iron-tinged springs at Magoroku, opaque sulfur at Kuroyu, and a quieter calcium-sodium soak at Taenoyu. Snow piles deep here from December through March, often above the eaves, and the steam rising off the baths against the cedar walls is most of why people come in winter at all. The yumeguri-chō, a wooden pass sold to overnight guests, gives one bath at each of the seven inns and a seat on the Yumeguri-gō shuttle that loops between them, so a two-night stay is enough to compare the lot.

When the snow goes

In the warm months the trailheads behind the inns open onto the Hachimantai plateau. The ascent of Mt. Nyūtō takes about three hours up and back from Kuroyu, and a longer ridge route drops down toward Lake Tazawa, the deepest lake in Japan, whose blue caldera sits a short drive south of the valley mouth.