Raichozawa Onsen

Raichozawa Onsen—Ptarmigan Gully Spring—shares its name with the rock ptarmigan (raicho), the iconic alpine bird of the Tateyama highlands in Toyama Prefecture, taking the more specific topographic form of zawa (stream or gully) to describe a spring emerging from one of the narrow seasonal watercourses that drain the volcanic slopes of the Tateyama range. This spring's location in the ptarmigan gully complements the nearby Raicho Onsen in a highland volcanic landscape where the combination of extreme altitude, persistent alpine snow, and active volcanic geology creates conditions for thermal spring emergence of exceptional geological interest. The gully-named ptarmigan spring adds a topographically precise dimension to the shared ptarmigan heritage of this Toyama alpine spring cluster, where the bird's name marks multiple thermal features within the same volcanic drainage system.