Kaema Plateau

The Kaema Plateau is a highland in North Korea. It is surrounded by the Rangrim Mountains, the Macheollyeong Mountains and the Bujeollyeong Mountains. Elevation varies between 700 and 2,000 meters and is approximately 40,000 square kilometers. The Kaema Plateau slopes downward towards the northern border of the People's Republic of China and is the largest tableland in Korea; it is often called "The roof of Korea". In North Korea, the Kaema Plateau is divided into Kaema Plateau, Jagang Plateau, and Baekmu Plateau (in Musan). Up to approximately one million years ago, the Kaema Plateau was an extension of the Manchurian plains, as such the Hochon River and Changjin River were tributaries of the Songhua River, however basalt from Baekdu Mountain accumulated in Changbai Korean Autonomous County, directing the rivers into the Amnok River in modern times, consequently valleys were formed by the tributaries in the ensuing millennia. Some flat terrain still remains in some part in southeastern part of the plateau.