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)
Modern houses have been built at the Kayang Farm in Unnyul County of South Hwanghae Province and the Kyejong Farm in Kumchon
February 04, 2026
Modern houses have been built at the Kayang Farm in Unnyul County of South Hwanghae Province and the Kyejong Farm in Kumchon
A national photo exhibition, “Under the uplifted banner of self-reliance”, opened to celebrate the 84th birth anniversary of
February 04, 2026
A national photo exhibition, “Under the uplifted banner of self-reliance”, opened to celebrate the 84th birth anniversary of
One day in August 2024, the respected Comrade Kim Jong Un visited a flood-hit area in North Phyongan Province. That day he told
February 04, 2026
One day in August 2024, the respected Comrade Kim Jong Un visited a flood-hit area in North Phyongan Province. That day he told
One day in December 2025, the respected Comrade Kim Jong Un visited regional- industry factories in Sinyang County nearing
February 04, 2026
One day in December 2025, the respected Comrade Kim Jong Un visited regional- industry factories in Sinyang County nearing
Korea has 24 seasonal subdivisions based on the 24-part division of the earth’s orbit around the sun. February has two
February 04, 2026
Korea has 24 seasonal subdivisions based on the 24-part division of the earth’s orbit around the sun. February has two
Hwang Tok Man, PhD, Prof. and researcher of the Life Science Faculty of Kim Il Sung University has established a new method of
February 04, 2026
Hwang Tok Man, PhD, Prof. and researcher of the Life Science Faculty of Kim Il Sung University has established a new method of
The Ryonggang County Hospital opened on February 1. On hearing the news of the opening of the hospital, many residents in the
February 03, 2026
The Ryonggang County Hospital opened on February 1. On hearing the news of the opening of the hospital, many residents in the
The Hwangchoryong Spring Water Bottling Factory has been built in South Hamgyong Province of the DPRK. The factory with automated
February 03, 2026
The Hwangchoryong Spring Water Bottling Factory has been built in South Hamgyong Province of the DPRK. The factory with automated
One day in April 2024, the respected Comrade Kim Jong Un visited the Hwasong Taedonggang Beer House on Rimhung Street prior to its
February 03, 2026
One day in April 2024, the respected Comrade Kim Jong Un visited the Hwasong Taedonggang Beer House on Rimhung Street prior to its
South Hamgyong Province’s Kumya County has a wide expanse of wetland areas rich in water resources, plants and animals, which
February 03, 2026
South Hamgyong Province’s Kumya County has a wide expanse of wetland areas rich in water resources, plants and animals, which
Posters for the Third People’s Art Festival for Celebrating February 16 have been produced in the DPRK. The posters carry
February 03, 2026
Posters for the Third People’s Art Festival for Celebrating February 16 have been produced in the DPRK. The posters carry
Fairyland villages picturing the beautiful future of the countryside have appeared one after another at farms in South Hwanghae
February 03, 2026
Fairyland villages picturing the beautiful future of the countryside have appeared one after another at farms in South Hwanghae
February 2 is World Wetlands Day. Wetlands are regarded as valuable resources indispensible for human existence and sustainable
February 03, 2026
February 2 is World Wetlands Day. Wetlands are regarded as valuable resources indispensible for human existence and sustainable
Myogil statue of Mt Kumgang, or Mahayon Myogil statue, is located in Naegumgang-ri, Kumgang County of Kangwon Province. Carved on
February 03, 2026
Myogil statue of Mt Kumgang, or Mahayon Myogil statue, is located in Naegumgang-ri, Kumgang County of Kangwon Province. Carved on
The third-year projects for implementing the regional development policy in the new era is being conducted on a full scale, under
February 02, 2026
The third-year projects for implementing the regional development policy in the new era is being conducted on a full scale, under
A new dormitory has been built at Hamhung College of Medical Sciences in the DPRK. The dormitory, consisting of two blocks built
February 02, 2026
A new dormitory has been built at Hamhung College of Medical Sciences in the DPRK. The dormitory, consisting of two blocks built
Modern dwelling houses have appeared in Jonsung-ri of Phyonggang County and Kaechon-ri of Ichon County, Kangwon Province of the
February 02, 2026
Modern dwelling houses have appeared in Jonsung-ri of Phyonggang County and Kaechon-ri of Ichon County, Kangwon Province of the
A tree nursery has been successfully built in Kaesong Municipality of the DPRK. The tree nursery, located in a place favourable
February 01, 2026
A tree nursery has been successfully built in Kaesong Municipality of the DPRK. The tree nursery, located in a place favourable
North Hwanghae Province of the DPRK renovated Sariwon Kye Ung Sang University of Agriculture. The university has a main building,
February 01, 2026
North Hwanghae Province of the DPRK renovated Sariwon Kye Ung Sang University of Agriculture. The university has a main building,
The Third People’s Art Festival for Celebrating February 16 will be held in Pyongyang and other parts of the DPRK.The festival to
February 01, 2026
The Third People’s Art Festival for Celebrating February 16 will be held in Pyongyang and other parts of the DPRK.The festival to
More Articles
