利根川ダム統合管理事務所音声ガイド

This is the official guide app of the Ministry of Land, Infrastructure, Transport and Tourisms Tone River Dams Integrated Control Office. It provides information about the facilities and sights of the four upstream dams on the Tone River (Fujiwara Dam, Aimata Dam, Sonohara Dam, and Yamba Dam), in Japanese, English, and Chinese audio and pictures.