Asahi Kosen Naturalist no Ie
朝日鉱泉ナチュラリストの家
Seasonal mountain lodge facing Mount Oasahidake
Day Use
YesDuring the climbers' bus period, day-use bathing runs roughly 12:00 to 18:00; at other times contact the lodge first. For 2026 the lodge announced overnight guests only, with daytime service (lunch, rest, bathing) only on the autumn bus days, 9 to 12 October. It may be refused on crowded days. Open from early May to the first week of November (the 2026 season ends on 3 November). May close irregularly on days with no overnight bookings.
Towel and yukata rental cost extra.
Bathing & Water
Uses natural hot spring water
Bathing Arrangements
Shared bathing area for all genders
Policies & Services
A restaurant or dining room open to visitors, not only meals for overnight guests
Lunch (handmade soba) is served only on some days, mainly while the climbers' bus runs.
Shower, wash stations, soap and shampoo provided
Towels to rent or borrow at the desk
On-site or nearby parking available
Views
MountainsAbout
A small mountain lodge in Asahi town, Yamagata, with a view of Mount Oasahidake in front. The baths use hot-spring water, and the lodge keeps shampoo and body soap in the bathroom. On quiet weekdays one bath is shared by men and women in turns, and on busy days there are two. Guests sleep upstairs on futon in tatami rooms, six rooms of different sizes. Handmade soba lunch is served only on certain days, mostly while the climbers' bus runs. The lodge is open only from spring to early November, and day-use bathing is offered mainly while the climbers' bus runs; at other times the lodge may take overnight guests only, so contact it before coming for a bath.
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Last updated October 11, 2026