Sodium spring
A sodium-led chloride spring with a touch of bicarbonate softness layered in. On the posted composition table sodium dominates the cations while chloride is the leading anion, giving a salty, heat-retaining character. Only the ion-composition portion of the analysis is posted here, with no pH, source temperature, or formal spring-type name shown, so the finer sensory detail cannot be confirmed from this document.
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68. Sachinoyu, Gero Onsen One of the three public onsens in Gero. Operating hours are listed differently in different places (one says 12 to 22 except Tuesdays, another says 14 to 21 except Mon-Tue). Tegata is not accepted here. Style-wise it's a sento with onsen water — you even need to bring your own shampoo. Prices in photo. The establishment has the following baths: 1. Main round bath. 2. Round jacuzzi bath. 3. A nice utaseyu (waterfall bath). 4. Cold water bath. 5. Outdoor square bath. Water in the baths is hot, clear. Breathing inside is fine. Overall there's probably little reason to go to this onsen in Gero, unless you're specifically craving a sento atmosphere.
