Oku-Nagatoro, Minano, Chichibu District, Saitama
Chichibu Onsen Mangan-no-Yu
Choose this bath for the gorge setting and views toward Mangan Falls, especially on a drive through Oku-Nagatoro. The operator calls the outdoor baths 100% source water, but does not provide enough current detail to call every outdoor pool fully source-flowing. Tattoos are not allowed.
Check before bathing
- Opening hours
- 10:00–21:00; last admission 20:30. Current prices as of September 7, 2026: adults ¥980 on weekdays, ¥750 after 17:00, and ¥1,200 on weekends and public holidays. A price change was announced for October 1, 2026; check the operator's current rate before visiting after that date.
- Tattoo policy
- Tattoos and tattoo stickers are not allowed. Guests wearing diapers may not bathe.
Spring & water temperature
- Spring-source temperature
- Not published.
- Bathing temperature
- Not published.
- Spring source
- Chichibu Onsen Mangan-no-Yu.
- Spring classification
- Alkaline simple sulfur cold mineral spring, pH 9.3.
- pH
- 9.3.
- Flow rate
- Not published.
- Water handling
- The operator describes its outdoor baths as 100% source water and says they overlook Mangan Falls. The current text does not establish that all outdoor pools are fully source-flowing; treatment details for the indoor bath are also not published.
The facility announced a price revision from October 1, 2026; the September prices above should not be assumed to remain current afterward.
How to read a bath profile
Spring-source temperature and actual bathing temperature are kept separate. Each score is shown independently for comparison rather than collapsed into one overall score.
