An alkaline simple hot spring that gushes from 1,500 m underground on the premises. Known as a beauty bath, it is exceptionally skin-friendly, and is said to leave the skin smooth and moisturized after bathing. Its gentle water has little刺激, making long soaks safe and enjoyable for everyone from children to older adults. It also has excellent heat-retention properties, and is the facility's main spring source, letting you feel warmth all the way to the core of your body.

Another natural hot spring drawn through pipes from Kasukawa Nakanosawa, about 5 km away. The water is colorless, transparent, tasteless, and odorless, with a clean, uncomplicated quality that makes for a refreshing bathing experience. By alternating between these two different spring sources, you can fully appreciate the depth of hot spring bathing. Bathing in the open-air bath with natural stones while viewing the changing seasons is especially memorable.