Gangcheonseom Island

Located in the upper reaches of the Namhangang River (Yeogang), Gangcheonseom Island is an ecological island featuring ginkgo trees in autumn, magnolias in spring, and a colony of the endangered wild plant species *Aster altaicus* var. *uchiyamae* (Danyang ssukbujaengi). Originally not an island, it became submerged during the rainy season and turned into an island; after the Four Major Rivers Project, it was completely separated from the mainland and became an island.

Spanning a vast area of 571,000㎡, Gangcheonseom Island is larger than Nami Island, and it takes over an hour on foot to explore the entire island.