Mt. Kumgang

Mount Kumgang, also called the Diamond Mountains, is a massif in Kangwon Province on North Korea's east coast, about 50 km from Sokcho in South Korea. It covers about 530 km2, up to 40 km east to west and 60 km north to south, and its main peak, Pirobong, rises to 1,638 m^[1]. More than 60 peaks top 1,000 m, and the range was historically known as the "12,000 peaks"^[1].

About 25,000 ha of the massif is recognised by BirdLife International as an Important Bird Area because it supports endangered red-crowned cranes^[1]. The mountain lies where northern and southern plant and animal communities meet, and much of it is mixed broadleaf and coniferous forest^[1].

Much of Mount Kumgang is covered by mixed broadleaf and coniferous forest, which lies inside a national park of about 60,000 ha^[1]. The climate places northern and southern plant species side by side on the same slopes^[1].

The rock of Mount Kumgang is mostly two types of granite, with granite-gneiss zones in some areas. Erosion and weathering over roughly 10 million years produced the massif's pinnacles, cliffs and unusual rock formations^[1].

Rainfall is relatively high, peaking in July and August. Winters are very cold at higher altitudes, and snow can arrive as early as October^[1].

The mountain has been celebrated for its scenery since ancient times, and Joseon-era poets and artists made pilgrimages to it. Jeong Seon painted well-known works of Mount Kumgang in the 1740s^[1].

Mount Kumgang is protected as a national park of about 60,000 ha^[1]. It was inscribed as a UNESCO World Heritage Site in 2025 under mixed criteria iii and vii^[1].

The main draw is the massif's granite peaks, led by Pirobong at 1,638 m, together with its cliffs and forested valleys^[1]. Its name refers to the sparkling, hard cliffs of the range.

South Korean tourism began in 1998, first by cruise ship and later mainly by coach, with a land route opening in 2003. Trips were suspended after a 2008 shooting of a South Korean tourist, and since 2011 North Korean cruises have run from Rason, mainly for Chinese visitors^[1]. The nearest city in the row is Wonsan.

The massif lies within a 60,000 ha national park and holds a BirdLife Important Bird Area of about 25,000 ha for red-crowned cranes^[1]. It gained World Heritage listing in 2025^[1].