Koshikijima (Satsumasendai City, Kagoshima Prefecture)
Overview (History, Features, and Attractions) The Koshikijima Islands (Kami-Koshikijima, Naka-Koshikijima, Shimo-Koshikijima, etc.) are an archipelago floating in the East China Sea west of Satsumasendai City, Kagoshima Prefecture. Characterized by cliffs and unusual rock formations created by volcanic activity and marine erosion, as well as an intricate coastline, the entire island offers a dynamic landscape.