Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Wajiki Onsen is located in the hamlet of Wajiki, in the town of Naka, Tokushima Prefecture. Its sodium-chloride thermal water flows at around 40°C (pH 7.3), with an indoor bath, an outdoor rotenburo and a sauna.
Insider tip — Wajiki is a small mountain community in the Naka River valley where isolation preserved distinctive folk traditions — local weaving patterns, dance forms, and agricultural customs differ markedly from coastal Tokushima. The valley's cedar forests were historically logged via river rafting (ikada nagashi) down the Naka to the coast — skilled raftsmen navigating the white-water gorges were community heroes. Wajiki Onsen serves these valley communities as the social heart of a rural mountain culture that lives in the quiet spaces between Japan's tourist circuits.