What is "munsan"

Munsan is an administrative division ( eup) of Paju-si, Gyeonggi-do, South Korea. It lies on the south bank of the Imjin River, close to the edge of the Demilitarized Zone and near Panmunjom and the Joint Security Area.

Munsan has a heavy military presence because of the proximity to the South Korean border with North Korea. At the time of the Korean War it was known as Munsa-an-ni. Munsan was the scene of Operation Tomahawk on 23 March 1951, an attempt by U.S. airborne troops to cut off retreating People's Volunteer Army and Korean People's Army forces.