Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
BicarbonatesSodiumCalcium
Kochi Kagami Onsen serves the Kagami area of Kami City in the forested uplands of northern Kochi Prefecture, where the Kagami River descends from the central Shikoku mountains through a valley whose clear waters, natural pools, and dense cedar-and-oak forest create the characteristic atmosphere of Kochi's mountain interior — a landscape of green depth and running water that stands in vivid contrast to the Pacific coast communities just an hour's drive to the south. The Kami City area, formed by the merger of several highland communities, preserves traditional aspects of Shikoku mountain life including forestry traditions, local sake brewing, and the community festivals that mark the agricultural seasons in highland Kochi. The onsen's siliceous geothermal mineral waters, tapping into the thermal resources of the Shikoku's metamorphic geological foundation, provide warm therapeutic bathing in a mountain community where the silence of the forest and the sound of running water define the ambient texture of daily life.
Insider tip — Set in the Kagami River corridor northeast of central Kochi City, this onsen taps bicarbonate springs rising through the alluvial sediments of the river plain. It is a neighborhood facility that few foreign visitors discover, giving it an authentic local character typical of provincial Shikoku. The water is clear with a faint mineral salinity that warms the body gradually. In June, fireflies appear along the Kagami River banks at dusk, a spectacle best enjoyed by soaking, then walking the riverside path after dark.