Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Akakura Onsen is a thriving hot spring resort on the slopes of Mount Myoko, a dormant stratovolcano in Niigata Prefecture whose geothermal activity supplies the chloride-rich thermal waters that have made this area a celebrated destination since the Meiji era. The sodium-chloride mineral composition of Akakura's springs is valued for deeply warming the body, easing joint stiffness, and softening the skin, providing ideal recovery after skiing the extensive Myoko resort terrain in the snowy northern winters. As one of the hot spring towns of the Myoko-Togakushi area, Akakura Onsen sits within a volcanic highland landscape that has shaped both the physical character of its waters and the cultural traditions of northern Japanese mountain bathing for over a century.
Insider tip — Akakura Onsen spreads across the south-western flank of Mount Myoko, a volcanic stratovolcano on the Sea of Japan side of the Chubu highlands, where sodium-chloride water at 43°C seeps from hydrothermal veins through the andesite cone. Myoko-Togakushi Renzan National Park surrounds the resort, and the beech forests above the tree-line blaze with colour each October. The onsen town has been a ski resort since the 1930s, and classic wooden lodges lend an alpine nostalgia to the après-ski soak.