Hadano Onsen

Hadano Onsen is a thermal facility in Hadano city in Kanagawa Prefecture, situated in the Tanzawa-Oyama mountains at the western edge of the Kanto Plain — the forested highland barrier between Tokyo and the Tokai coast — where siliceous hot spring waters from the geological basement of the Tanzawa Mountains, part of the Fuji-Hakone-Izu National Park network, provide restorative bathing within easy commuting distance of Tokyo and Yokohama. The Tanzawa-Oyama area is Kanagawa's primary mountain wilderness, offering Japan's most accessible mountain hiking from Tokyo and sheltering the sacred Oyama Afuri Shrine — a major pilgrimage destination since the 8th century where worshippers ascend the 1,252-meter peak to pray for rain and maritime safety. Hadano's siliceous thermal bathing offers the residents of Japan's most densely populated metropolitan region a therapeutic escape into the forested mountain landscape that provides the Kanto megalopolis with its most immediate wilderness edge and spiritual retreat.