Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
SodiumBicarbonateSulfureAluminium
Naruko Onsen is a hidden gem thermal spring located in the Tohoku region of Japan's Osaki city. This bicarbonatated water source boasts a unique mineral composition that has been prized for centuries. Visitors can unwind and rejuvenate in the natural hot springs, surrounded by serene scenery.
Insider tip — Naruko Canyon in October — scarlet-red leaves over the thermal water — spectacular autumn colors.