Nagatoro Onsen Saitama
- Location
- Nagatoro, Saitama Prefecture, Japan
- Water type
- bicarbonate
- Temperature
- 40 °C
- pH
- 8
Water profile
Relaxing — deep, immediate muscle release.
Loaded with major ions — the essential minerals (Ca, Mg).
Soft water — natural, classic buoyancy.
Nagatoro Onsen Saitama is a hot spring in Nagatoro, a small town in Chichibu District, Saitama Prefecture, Japan, renowned for the spectacular Arakawa River gorge — an extraordinary geological formation of folded ancient rock strata that geologists consider one of Japan's most important exposed geological sequences, attracting enthusiasts who enjoy the thrilling traditional craft of shooting the rapids in flat-bottomed boats steered by local boatmen. The naturally bicarbonate-rich spring waters here provide a soothing, alkaline mineral soak perfect for recovery after river rafting adventures or gorge hiking, valued for their gentle skin-softening and muscle-relaxing properties. The combination of Nagatoro's extraordinary geological river gorge, the thrilling traditional boat navigation culture, and the restorative warmth of bicarbonate mineral spring bathing makes this one of Saitama's most scenically dramatic and thermally satisfying destinations.