Kamimaki Onsen; Fuwa no Yu

Kamimaki Onsen Fuwa no Yu — 'Gentle Hot Spring of Kamimaki' — is a thermal facility in Minakami town, Tone District, Gunma prefecture, Japan, located at the strategic gateway to the Tanigawa and Jōetsu mountain ranges where the Tone River originates and where the Minakami Onsen spa district concentrates some of the most varied and productive geothermal spring resources in the Japanese Alps foothills. Minakami is renowned as a hot spring destination with dozens of onsen facilities ranging from primitive riverside roto-buro (open-air rock pools) to luxury ryokan (inn) establishments, and as an adventure sports center offering rafting on the Tone River in summer and skiing on the Tenjindaira slopes of Tanigawadake in winter — a year-round destination combining thermal wellness with mountain outdoor activity. Fuwa no Yu's simple mineral waters provide a gentle, undemanding hot spring experience in the broad onsen landscape of Minakami, drawing on the volcanic and hydrothermal heritage of the Gunma highland region where the great concentration of mountain hot springs has shaped the local economy and tourism culture for centuries.