Korea is mountainous with the land standing an average of 442m above sea level. The highlands are 176 404sq km (78.7% of the whole territory) and the lowlands are 47 848 sq km (21.3% of the whole territory).
Topographically, the land is high on the north and the east and gets lower southwards and westwards.
The Great Paektu Mountains stretch from Mt Paektu to Kujae Peak on the south coast constituting spinal mountain ranges and spreading many branches, thereby forming a system of mountain ranges. Janggun Peak (2 750m above sea level) of Mt Paektu is the highest peak in Korea.
Korea abounds in uplands and hollows including the Paektu, Paengmu and Kaema plateaus, the Kanggye and Hoeryong basins and Ryongmun Cavern and Songam Cave.
Valleys are developed along plenty of rivers and streams, and slopes hold a wide area. Pyongyang, Ryongchon, Yoltusamcholli and other plains are mostly found in the lower reaches of long rivers on the west and south coasts and coastal areas.
The coastline is long and very indented.
Korea has diverse landforms such as alpine areas, plateaus, plains, basins, river valleys, coasts, karst and aeolian soil.