Okuizumo Onsen Nita

Okuizumo Onsen is located in the Nita area of Okuizumo town in Shimane Prefecture, in the ancient Izumo mountain region of western Honshu, where bicarbonate and ferruginous thermal waters emerge from geological formations in a landscape associated with the iron-smelting tatara tradition and the mythological heritage of Izumo—the region where Japan's most ancient Shinto myths of the gods are set. The bicarbonate and iron-rich dual mineral character of Okuizumo's thermal waters carries properties valued in Japanese spa tradition for their combined skin-nourishing alkaline and iron-fortifying effects, making this a distinctively characterized onsen experience within the San'in thermal region. The Okuizumo gorge and the surrounding Chugoku mountains—whose ancient forests and iron-rich geology have sustained the tatara iron-smelting tradition that produced the distinctive tamahagane steel used in Japanese sword-making for centuries—frame this onsen within a landscape where volcanic mineral forces and ancient craft heritage are inseparably connected.