Inabu Onsen Donguri no Yu
Toyota, Aichi, Japan
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- Location
- Toyota, Aichi, Japan
- Water type
- sodium chloride
- Temperature
- 41 °C
- pH
- 7.3
Water profile
Thermicity
Sedative
LowHigh
Relaxing — deep, immediate muscle release.
Mineralisation
Restorative
LowHigh
Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Donguri no Yu, in Toyota (Aichi prefecture), in the Inabu area, heats sodium-chloride water to 41°C. The onsen offers an indoor bath, an outdoor rotenburo bath, and a sauna.
Insider tip — Donguri no Yu, the acorn spring, serves the Inabu highland district of Toyota City in the Aichi mountain zone where the oak forests above the Yahagi River headwaters produce the acorn crop that gave this mountain resort its name. The Inabu area is the wildest and most remote corner of Toyota City — whose urban center 60 kilometres to the east is Japan automotive capital — and the forested valleys of Inabu preserve the mountain character of the Mikawa highlands where charcoal burning and traditional agriculture sustained isolated communities through the Edo period.
Nearby
Frequently asked questions
How hot is the water?
The water runs quite hot here, around 41 °C — a sedative water that brings immediate muscle release.
What type of water is found here?
This spot features sodium chloride water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année.