Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
SoufreSulfuresSulfates
In the renowned hot-spring region of Beppu, Oita Prefecture, Yuyama no Sato Onsen draws sulfurous thermal water at 44°C. It offers an indoor bath, an outdoor bath (rotenburo) and a sauna.
Insider tip — Yuyama no Sato (Hot Water Mountain Village) captures the essence of Beppu's extraordinary geothermal landscape. Beppu discharges more hot spring water than anywhere on Earth except Yellowstone — over 130,000 liters per minute across 8 distinct hell springs (jigoku). The sulfurous steam and mineral-rich waters here are particularly warming on cold Kyushu winters. Take the scenic Beppu Ropeway up Mt. Tsurumi after your soak for views over the steaming city below.