A special natural cave has been discovered in Iryong-ri, Kowon County, South Hamgyong Province.

   It is located on the mid-slope of an eastern mountain of the Puktaebong Mountains, about 8km away from the seat of Iryong-ri.

   The entrance of the cave is about 1.5 metres wide and 2 metres high, inwardly widening up to 15 metres and narrowing to 0.5 metre in some part. It is a karst cave formed under the influence of underground water in the limestone area. The main part of the cave is over 240 metres long. And the cave consists of four short branches and three vertical ones.

   The cave is distinctively smaller in scale and shorter in length than Ryongmun Cave and Songam Cave, but it has spectacular objects.

   A variety of stalactites hanging down from the ceiling of the cave present mysterious scenery.

   Also peculiar are stone pillars.

   According to scholars, the cave has been formed long ago, given that it was formed by corrosion, its stalagmites and stalactites created by sedimentation and some of them growing to merge into stone pillars.

   After making specific surveys and deliberation, the new cave has been named “Iryong Cave” and registered as natural monument No. 256 on April 30, 2025.