The Komun Moru ruins (Korean: 검은모루) are "primitive relics" discovered in Sangwon County, Pyongyang, North Korea.
[3] North Korean archaeologists propose that the Komunmoru cave site should be dated about one million years, but "the evidence for supporting this hypothesis is exiguous".
The protected relics in question were found in the fourth layer of the site (from the Lower Paleolithic era).
Aside from these, the first, the third and the fourth layers (from the bottom upward) have yielded "rich faunal remains corresponding to (the) early period of (the) Middle Pleistocene".
Among the features of the tools, heavy flakes and cores were produced by a hurling technique, followed by a few direct percussions to form the cutting edges, with little to no secondary retouches in most cases.