Unazuki Onsen, Kurobe, Toyama
Kohan-no-Yu Tochino-Yu
A lakeside outdoor bath and indoor bath using the Kuroburo spring supply. The facility reopened on August 29, 2026, after a road closure; it normally shuts for winter from early December until mid-to-late April.
Check before bathing
- Opening hours
- 10:00–17:00; last admission 16:30. Adult ¥510. Open daily during its operating season, subject to temporary closures. Normally closed for winter from early December through mid-to-late April. Reopened August 29, 2026, after the road restriction was lifted.
Spring & water temperature
- Spring-source temperature
- 87.8°C at the Kuroburo spring source; this is not the temperature of the baths.
- Bathing temperature
- Not published.
- Spring source
- The Unazuki Onsen supply brought from Kuroburo.
- Spring classification
- Weakly alkaline simple spring; low-tonicity and high-temperature.
- pH
- Not published; only the weakly alkaline classification is confirmed.
- Flow rate
- Not published for this facility; area-wide spring volume is not an individual supply rate.
- Water handling
- The operator confirms natural spring water in both the outdoor and indoor baths. Current official text does not fully specify water addition, heating, circulation or disinfection by pool, so the baths are not described as source-flowing.
Bathing indications
The operator lists general bathing indications including neuralgia, muscle pain, frozen shoulder, chronic digestive conditions, sensitivity to cold, hemorrhoids, joint pain, limited mobility and bruises. These are not a promise of medical benefit.
Shampoo, body wash, conditioner and a hair dryer are provided. Face towels are sold for ¥300; bath towels are neither sold nor rented.
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.
