Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Shichirida Onsen, also known as Shimo no Yu, is located in Taketa, Oita Prefecture. Sodium-chloride water reaches around 40°C, with an indoor bath, an outdoor rotenburo bath and a sauna.
Insider tip — 'Shimo no Yu' (下の湯 — lower bath) at Shichirida Onsen in Taketa city. 'Shichirida' (七里田) = seven-league rice field — a poetic place name suggesting a landscape of vast paddy fields stretching for leagues in all directions. The lower bath (shimo no yu) is often the older, more traditional facility in onsen complexes with multiple bath levels — closer to the original spring source, typically less refined but more mineral-intense than the upper facilities. In Taketa's Shichirida valley, this agricultural-named spring feeds from the Aso volcanic aquifer.