Ongnyŏ-bong is a 304 m peak in Maengsan County, South Pyongan, in North Korea. It belongs to the Rangrim Mountains, part of the wider mountain system of the Korean Peninsula in East Asia.
At this height it is a modest summit rather than a major high point, but it sits among a dense cluster of hills and peaks. Within the Rangrim Mountains it ranks 659th out of 678 named peaks by elevation, and the nearest higher summit is only 1.8 km away to the west.
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Ongnyŏ-bong lies in Maengsan County of South Pyongan, in the Rangrim Mountains of North Korea. The range extends across China and North Korea, placing the peak in the eastern part of a broader upland belt on the Korean Peninsula.
At 304 m, it is a low summit by regional standards and sits in a landscape of nearby hills, passes and higher ridges rather than an isolated mountain block. Its position among several peaks within a few kilometres suggests a broken, hilly terrain with short intervening valleys and saddles.
Nearby summits and passes help define the local terrain around Ongnyŏ-bong:
The nearest higher peak is Mirŭk-san, which rises well above Ongnyŏ-bong and sits just 1.8 km away. Several other nearby hills are also higher, so Ongnyŏ-bong is part of a compact cluster of modest summits rather than a dominant ridge point.
From Ongnyŏ-bong, the highest peaks within 25 km are spread around the horizon in several directions. To the east is Pyŏngp'ung-san at 1,447 m, 24.8 km away. To the northeast are Kamt’u-bong at 1,298 m, 21.2 km away and Mangjindŏk-san at 1,132 m, 23.3 km away.
Other major nearby heights include Changan-san to the west at 1,248 m, Minbong-san to the southeast at 1,109 m, and Ch’ŏrong-san to the east at 1,094 m. These figures show that Ongnyŏ-bong sits below a ring of much higher mountains in the wider area.
Ongnyŏ-bong belongs to the Rangrim Mountains, whose highest peak is Puksubaek-san at 2,522 m, about 159 km to the northeast. The range spans China and North Korea, so it is a transboundary mountain system rather than a purely local one.
The Rangrim Mountains contain 678 named peaks, and Ongnyŏ-bong ranks 659th by elevation among them. That position places it near the lower end of the range’s named summits, even though it still sits within a landscape of many distinct hills and ridges.
Climate estimates from NASA POWER suggest that the summit is warm in summer and cold in winter. The warmest month is July, at about 23 °C, while the coldest is January, at about -9 °C. Mean temperatures are above freezing from March through November.
The surrounding area receives about 1,100 mm of precipitation a year. Rainfall is concentrated in summer, with July the wettest month at about 315 mm, while January is the driest at about 10 mm. Conditions are therefore likely to be wet and humid in midsummer, and cold and dry in midwinter.
For a short walk on Ongnyŏ-bong, the most comfortable period is usually the months with temperatures above freezing and less intense rainfall. Based on the climate pattern, spring and autumn are the most practical seasons, especially April, May, September and October.
Summer brings the warmest weather but also the heaviest rain, especially in July. Winter is much colder, with mean temperatures well below freezing at the summit, so snow, ice and wind chill are more likely to affect footing and comfort.
The hills around Ongnyŏ-bong are part of a temperate mountain landscape, so the slopes are likely to carry mixed woodland, shrubs and seasonal undergrowth, with more open ground on ridges and in disturbed or cultivated lower areas. In this part of East Asia, birds, small mammals and forest species typical of Korean uplands are the animals walkers are most likely to associate with the terrain.
Because the peak is low and surrounded by other hills, the setting is more about rolling ridges and local valleys than alpine rock. In warm months, vegetation can be dense and the ground may be damp after rain, while colder months bring bare branches and a quieter forested feel.
Ongnyŏ-bong is a short mountain outing rather than a technical climb, but the local hills can still be uneven and slippery after rain. Sturdy walking shoes are sensible, and a light wind layer is useful because exposed ridges can feel cooler than the valleys below.
In the warmer months, check for muddy sections and keep to established paths where they exist. If you are walking in leafier seasons, long trousers can help against brush and insects. Because the summit is low and the surrounding terrain is broken, navigation is easier with a map downloaded in advance.
Ongnyŏ-bong is 304 m high and ranks 659th among 678 named peaks in the Rangrim Mountains. Its nearest higher neighbour is Mirŭk-san, 826 m high and only 1.8 km to the west, which shows how closely packed the local hills are.
The peak also sits within a range that crosses an international border between China and North Korea. Although Ongnyŏ-bong itself is not a major summit, it is part of a much larger mountain system whose highest point, Puksubaek-san, rises far to the northeast.
How high is Ongnyŏ-bong? It rises to 304 m above sea level.
Where is Ongnyŏ-bong? It is in Maengsan County, South Pyongan, in North Korea, within the Rangrim Mountains of the Korean Peninsula.
What is the nearest higher peak? Mirŭk-san is the nearest higher summit, 826 m high and 1.8 km to the west.
What other hills are close by? Nearby features include Songgye-bong to the southeast, Yŏngma-san to the south, Pukhodŏk-san to the east and Sol-bong to the northwest.
What is the climate like? The summit is about 23 °C in July and about -9 °C in January, with most rain falling in summer and about 1,100 mm a year in the surrounding area.
Will mobile coverage work on the hill? Coverage in the hills is patchy and depends on the operator; on open ground a signal is more likely, while valleys and ridges can block it. 112 reaches emergency services over any available network, and maps should be downloaded before setting out.
How long does it take to walk up? Any estimate would depend on your starting point and the path chosen.
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