It is a small swamp with a circumference of 500m located opposite the 1.5km-circumference Hachiman-numa that can be seen from the Hachimantai Summit Observation Deck at an altitude of 1,613m. The water in the marsh has a beautiful blue color due to the presence of a substance called sulfur colloid.
- Location
- Hachimantai City, Iwate Prefecture
- Inquiries
- (One company) Hachimantai City Tourism Association
Phone number 0195-78-3500
FAX number 0195-78-3838