Tatsuno Town, Kamiina District, Nagano Prefecture, is located near the center of the prefecture, bordering Okaya City and two other cities, one town, and one village. The area is surrounded by abundant nature, including numerous mountains such as Mount Kyogatake and Mount Bozu, as well as the Tenryu River. The town's tree is the weeping chestnut, and its flower is the yellow-flowered amaryllis, whose flower language is happiness. The town's symbol is the Genji firefly, and Matsuo Gorge is famous nationwide as a famous firefly spot. Despite a history of mergers and name changes, the area's specialty products include apples, firefly manju, firefly beans, and firefly rice bowls. Tourist attractions include Weeping Chestnut Forest Park, Arajinyama Park, and the World Insect Museum.