Yatsugatake Mountain Onsen

Yatsugatake Mountain Onsen in Chino city, Nagano prefecture, draws calcium-bicarbonate thermal waters on the southern flanks of the Yatsugatake volcanic range at around 1,300 meters elevation, where multiple peaks including Akadake (2,899 m) rise above highland meadows of larch and birch surrounding the Suwa basin. The onsen sits near the famous Jōmon Jidai ruins of the Togariishi archaeological complex — one of Japan's largest Middle Jōmon period settlements, providing context for 5,000 years of continuous human habitation in this highland basin. The proximity to Lake Suwa — Japan's only lake famous for 'ohwatari,' a miraculous winter ice ridge that Shinto tradition interprets as the footprint of a god crossing to his divine consort — gives Yatsugatake's mountain onsen a mythological setting of extraordinary Japanese religious imagination.