Pidansom

Pidansom (, : Chouduan Island) is a river island in the Yalu river in North Korea. Pidansom was developed by merging of several river islands such as Sindo Island (薪島) and Maando (馬鞍島) in the 1960s. The island is home to a fishing cooperative and is also used for agriculture.
The island was originally Chinese, but became Korean during the Japanese annexation of Korea. After the Korean war the Korean government offered the Island to China as a gift for their war efforts, but after the 1962 Sino-Korean border treaty the island definitively became Korean territory and 50 Chinese households were evacuated to China.