Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
SoufreSulfuresSulfates
Hibara Fureai Onsen, also known as Kobo, is located in Kitashiobara, Fukushima Prefecture, near Lake Hibara. Its sulfurous thermal water, at 42°C (pH 6.5), fills an indoor bath, an outdoor rotenburo and a sauna.
Insider tip — Kitashiobara Village surrounds Lake Hibara (桧原湖) in the Urabandai area — a landscape born from catastrophe. The 1888 eruption of Mt. Bandai (2,000+ dead) blocked rivers and created 300+ lakes and marshes in vibrant turquoise, emerald, and gold. The Urabandai plateau's autumn foliage reflected in these volcanic lakes is one of Japan's most stunning seasonal spectacles. Hibara Fureai Onsen Kobo draws sulfurous waters from this volcanic system — bathing in the same geothermal energy that created this extraordinary landscape.