Archaeologists have discovered remnants of a “mokcheokseong,” a type of ancient Korean fortress wall constructed from interwoven wooden pillars, near Jangmisan Fortress in Chungju. This marks the first confirmed evidence of such a structure from the Mahan and Baekje periods (roughly 1st century BCE – 7th century CE). The find was made during an excavation near the historically significant mountain citadel, a site associated with the Three Kingdoms period. Researchers believe the wooden palisade served as a defensive structure predating the stone fortress. The discovery provides valuable insights into the military architecture and defensive strategies employed during these early Korean kingdoms. Further investigation is planned to fully map and understand the extent of the mokcheokseong remains and their relationship to Jangmisan Fortress.