Free-flow from source
Shobinoyu
A natural mildly alkaline hot spring that flows up from underground. At the open-air bath "Uenoyu," fresh spring water is provided free-flowing without any added water, allowing you to feel the rich natural minerals of the hot spring on your skin. The salt-containing water has excellent heat-retaining and moisturizing effects, so your skin stays soft and hydrated after bathing, and the warmth lasts longer. It is an exceptional bathing area, widely known as a "beauty bath."