It is a one-day hot spring closest to the trailhead of the Kuroto ridge route of Mt. Kai-koma-gatake, and is located in Verga, a forest famous water park in Ojira, Hakushu. Hot water is rich in minerals and has an ultra-high concentration. In particular, the concentration of the open-air bath “Akayu” is about 30 times higher than the standard value of the hot spring method, so if you soak while looking at the stunning starry sky, you will be relieved of fatigue both physically and mentally.