Ueno Village, Tano District, is located in the westernmost part of Gunma Prefecture, bordering Nagano Prefecture, Gunma Prefecture, and Saitama Prefecture on all sides. The main water source is the Tone River, and with the abundance of mountain forests, there are many mountain streams. The water quality is excellent, so salmon, yamame trout, and char are thriving in abundance. In addition to the Tone River, there is also the Kanagawa River, which has the cleanest water quality in the Kanto region and has been selected as one of the 100 famous water sources. Ueno Village, Tano District, is home to Fujido Cave, a limestone cave that many people use as a summer resort. Living in Fujido Cave, which is blessed with nature, allows you to spend your time relaxing.