Rich in trace elements — gentle on the skin.
Soft water — natural, classic buoyancy.
Mahiru Onsen—Midday Spring—takes its name from mahiru, the full noon hour when the sun stands directly overhead and casts the shortest shadows of the day—a name that suggests a spring of full, brilliant, unobstructed thermal warmth that mirrors the completeness and generosity of the noonday sun at its zenith. Rising in Iwate Prefecture's volcanic landscape, this spring offers the bright, open character of its noon-sun name within the forested mountain terrain of Tohoku, where volcanic thermal energy powers the spring's emergence with the same completeness and abundance that the name's midday solar imagery implies. The noon spring name creates a spring of particular clarity and warmth—not the mysterious nighttime spring of hidden depth, but the fully revealed midday spring whose warmth is as direct and accessible as sunlight at its highest point.