The planation surface of Mt Koryong is located in Ryongchon-ri, Sangwon County, North Hwanghae Province.
It formed from the Paleocene-Oligocene period to the early Miocene period. Later, it rose hundreds of metres high by the crustal upheavals, which started from the late Miocene period.
The planation surface at the mountainside is about 280 to 440 metres above sea level.
The Nam River is about 20 metres above sea level. The planation surface is 260-420 metres high from the water surface, which shows its height lifted by the crustal upheavals after its formation.
It sprawls over an area of about 3.4㎢. Its foundation consists of Hwangju group-layer carbonate rock.
There are many funnel-shaped hollows formed by brisk karst action in the area.
The karst hollows and basins are tens to hundreds of metres in diameter and 10 to 15 metres in depth.
The planation surface is dotted with heaps of gravels, which show the traces of the Taedong River in the earliest times.
As it stands higher than the Pyongyang peneplain, another spacious flatland, it is of great academic significance in studying the neotectonic movement, erosion by the Taedong River and the change of its watercourse, and the karst landform.
Kim Ye Ryong
More From Naenara (En)
March 23 is World Meteorological Day. In January the World Meteorological Organization released a report that 2025 was recorded as
March 23, 2026
March 23 is World Meteorological Day. In January the World Meteorological Organization released a report that 2025 was recorded as
Kim Jong Un , general secretary of the Workers’ Party of Korea and president of the State Affairs of the Democratic People’s
March 23, 2026
Kim Jong Un , general secretary of the Workers’ Party of Korea and president of the State Affairs of the Democratic People’s
The First Session of the 15th Supreme People's Assembly of the DPRK elected the Legislation Committee, the Budget Committee and
March 23, 2026
The First Session of the 15th Supreme People's Assembly of the DPRK elected the Legislation Committee, the Budget Committee and
The First Session of the 15th Supreme People's Assembly of the Democratic People's Republic of Korea appointed the director of the
March 23, 2026
The First Session of the 15th Supreme People's Assembly of the Democratic People's Republic of Korea appointed the director of the
The First Session of the 15th Supreme People's Assembly of the Democratic People's Republic of Korea appointed the members of the
March 23, 2026
The First Session of the 15th Supreme People's Assembly of the Democratic People's Republic of Korea appointed the members of the
The First Session of the 15th Supreme People's Assembly of the Democratic People's Republic of Korea elected the State Affairs
March 23, 2026
The First Session of the 15th Supreme People's Assembly of the Democratic People's Republic of Korea elected the State Affairs
The First Session of the 15th Supreme People’s Assembly of the Democratic People’s Republic of Korea elected the Standing
March 23, 2026
The First Session of the 15th Supreme People’s Assembly of the Democratic People’s Republic of Korea elected the Standing
The First Session of the 15th Supreme People’s Assembly of the DPRK conducted the important and responsible work for electing
March 23, 2026
The First Session of the 15th Supreme People’s Assembly of the DPRK conducted the important and responsible work for electing
Deputy Ko Kil Son, secretary general of the Standing Committee of the Supreme People’s Assembly, made an opening speech at the
March 23, 2026
Deputy Ko Kil Son, secretary general of the Standing Committee of the Supreme People’s Assembly, made an opening speech at the
Jangyon County in South Hwanghae Province is well known for its successful cultivation of barley. It has become a flourishing
March 23, 2026
Jangyon County in South Hwanghae Province is well known for its successful cultivation of barley. It has become a flourishing
The Fourth Plenary Meeting of the Eighth Central Committee of the Workers’ Party of Korea held in late December 2021 set forth a
March 23, 2026
The Fourth Plenary Meeting of the Eighth Central Committee of the Workers’ Party of Korea held in late December 2021 set forth a
The rice-and-wormwood cake is one of the traditional Korean foods. Here is a story about it. Once upon a time a mother took out
March 23, 2026
The rice-and-wormwood cake is one of the traditional Korean foods. Here is a story about it. Once upon a time a mother took out
Yut (four-stick) game is one of the typical folk games that have been played by the Korean people since before the Koguryo period
March 23, 2026
Yut (four-stick) game is one of the typical folk games that have been played by the Korean people since before the Koguryo period
The sacred place where the heroic feats of the martyrs in the overseas military operations will go down in history is filled with
March 22, 2026
The sacred place where the heroic feats of the martyrs in the overseas military operations will go down in history is filled with
A groundbreaking ceremony for the fifth-stage construction project in the Hwasong area of the capital city of Pyongyang took place
March 22, 2026
A groundbreaking ceremony for the fifth-stage construction project in the Hwasong area of the capital city of Pyongyang took place
The Pyongyang Cosmetics Factory in Phyongchon District, Pyongyang, is the maker of the Unhasu -brand cosmetics with an
March 22, 2026
The Pyongyang Cosmetics Factory in Phyongchon District, Pyongyang, is the maker of the Unhasu -brand cosmetics with an
The Onpho hot spring in Kyongsong County, North Hamgyong Province of the DPRK, has been well known for its marvellous effect on
March 22, 2026
The Onpho hot spring in Kyongsong County, North Hamgyong Province of the DPRK, has been well known for its marvellous effect on
Kaesong Municipality was once the capital of Koryo (918-1392), one of the feudal states in Korea. In the city there are many tombs
March 22, 2026
Kaesong Municipality was once the capital of Koryo (918-1392), one of the feudal states in Korea. In the city there are many tombs
The area of Mt Paektu, 2 750 metres above sea level, is noted as a global geopark. Recently it is better known as an iconic
March 21, 2026
The area of Mt Paektu, 2 750 metres above sea level, is noted as a global geopark. Recently it is better known as an iconic
Koguryo lasted from 277 BC to AD 668. The tombs of the first feudal state of Korea have paintings on walls and ceilings. The
March 21, 2026
Koguryo lasted from 277 BC to AD 668. The tombs of the first feudal state of Korea have paintings on walls and ceilings. The
More Articles
