no.01 — onsen
n 43.61° / e 144.44°
subarctic / mean +5°c
ainu: atosa-nupuri
arrived — kawayu onsen, hokkaido
Mt. Iō
fūdo — why this place is what it is
This is subarctic Japan — Ainu land, where winters sink below −25°C. The Ainu named the mountain Atosa-nupuri, “the naked mountain”: too much sulfur for trees to grow. The town below pipes the volcano’s heat into its baths and its homes. Culture here is geothermal.
- Season
- May – October. Winter turns the caldera into a silent white field.
- Access
- 3 km from JR Kawayu-Onsen Sta. (Senmo Line).
- Onsen
- Free foot baths in town; waters acidic enough to soften a coin.