Nagano Prefecture KamiIna District Nishi Tenryu River – Series of Cylindrical Water Division / 長野県上伊那郡 西天竜幹線水路円筒分水群 by nabenabe on September 17, 2022January 3, 2023 in Cylindrical Water Division / 円筒分水, KamiIna District / 上伊那郡, Nagano Prefecture / 長野県