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Daisetsuzan NP, Hokkaido
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At Asahidake’s foot, the annual Ainu Nupurikor Kamuy Nomi ceremony prays for hikers’ and visitors’ safety. During one gathering, onsen guests and local children carried torches to light a communal fire before the prayers.
Chishima cherry blossoms reach Asahidake Onsen around mid-June; in 2022, they bloomed with snow still on the mountain. Locals once celebrated them as “Japan’s latest hanami”—a proud nickname, not a verified national record.
At Yukomanso inn, mountain spring water is also dessert: its original, crystal-clear “water jelly” is served between courses as a palate cleanser. It was created to let diners enjoy the water in a new way.
Found in 1914, Asahidake’s spring was nicknamed “eye-drop water” by the 1920s for its boric acid. A 1932 hut in the bamboo thicket served lumber workers, giving the spot its old name, Take-yabu Onsen.
At the Yukomanso inn, 5 natural springs rise on their own, together yielding more than 300 liters a minute. Their waters span 5 spring types and feed the baths directly, generally without dilution or heating.
The Ainu name Yukomanpet means “river going toward the hot spring” and refers to the Yukomanbetsu River by the onsen. A park guide notes that hot water still emerges nearby; the old name also lives on in Yukomanso inn.
Researchers found lowland plants—including chickweed and annual bluegrass—growing at 1,670m near Sugatami. Their study notes that seeds can travel on people and supplies, carrying familiar weeds from Asahidake Onsen’s lowlands into alpine country.
Olympians have trained on Asahidake Onsen’s forest cross-country course: 8km split into 3 trails, groomed early and lit after dark. The snow-season track typically runs November–May.
