Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Kono Onsen is a Japanese-style geothermal hot spring facility whose name carries the warm, personal resonance of a spring named after a person or place with familial associations in the Japanese hot spring naming tradition. Japan's onsen culture encompasses thousands of named springs across the archipelago's volcanically active islands, each with its own mineral character, temperature, and therapeutic reputation built up over centuries of community bathing. Kono Onsen provides naturally geothermally heated, mineralised spring water in the authentic Japanese onsen tradition of therapeutic soaking, relaxation, and communal bathing that has defined Japanese wellness culture since the earliest recorded history.
Insider tip — Kono Onsen in Nita town, Shimane prefecture, taps a sodium-chloride spring from the ancient Chugoku geological basement, offering that characteristic skin-warming afterglow the Japanese call nikkori-yu. Sitting at the foot of Mt Sanbe, the ryokan-style facility keeps water at around 41°C in traditional cypress-wood tubs. The area is justly famous for Izumo Taisha shrine, making this an ideal relaxation stop on a Shimane cultural itinerary.