Free-flow from source
Teganuma Onsen
An amber-colored sodium chloride spring that gushes up from deep underground. This highly mineralized, high-tonicity hot spring is known for its excellent heat retention and moisturizing effects, and is loved as a "hot spring of heat." Free-flowing source water is poured into each open-air bath, allowing you to feel the power of fresh hot spring water on your skin. In this open space where you can feel the nature of Lake Teganuma, you can savor this rich, renowned hot spring to your heart's content.