Soni Kogen Onsen; Okame no Yu
Soni, Nara Prefecture, Japan
- Location
- Soni, Nara Prefecture, Japan
- Water type
- iron-rich
- Temperature
- 38 °C
- pH
- 6.3
Water profile
Thermicity
Neutral
LowHigh
Soothing — neither hot nor cold, perfect balance.
Mineralisation
Bio-active
LowHigh
Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
FerBicarbonatesManganèse
Soni Kogen Onsen Okame no Yu is set in Soni, on the highland plateau of Nara Prefecture. Its iron-rich water surfaces at 38°C, shared across an indoor bath, an outdoor rotenburo bath and a sauna.
Insider tip — Okame no Yu in the Soni Kogen highland plateau of Nara prefecture draws reddish iron-rich waters from the Yamato mountains, characteristic of the region's mineralogy. The ferruginous springs tint the pools a warm amber and are prized for improving circulation and skin health. The dramatic highland landscape of Soni, famous for its silver-grass meadows, forms a stunning backdrop for open-air bathing.
Nearby
Frequently asked questions
How hot is the water?
The water is neutral here, around 38 °C — a perfect balance, neither too hot nor too cold.
What type of water is found here?
This spot features iron-rich water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année (idéal automne-hiver).