Matsukawa Onsen Iwate

Matsukawa Onsen is one of Japan's highest-altitude hot spring resorts, located in the volcanic Hachimantai plateau area of Iwate Prefecture, where sulphated and bicarbonate thermal waters emerge from an active geothermal zone at approximately 1,000 metres above sea level within Towada-Hachimantai National Park. The distinctive dual mineral character of Matsukawa's waters—combining sulphate and bicarbonate qualities—is associated with well-being and the softness it leaves on the skin, establishing this remote highland onsen as a destination for those seeking genuine immersion in a volcanic alpine environment within a long thermal tradition. The surrounding landscape of volcanic craters, alpine marshlands, and beech forests frames an onsen experience of exceptional ecological and geothermal intensity, particularly dramatic when early autumn snowfall reaches the Hachimantai highland in October.