DMZ (Demilitarized Zone)

A demilitarized buffer zone between North and South Korea established under the Korean War Armistice Agreement, it is the world's only remaining site of division and an ecological treasure trove.

DMZ (Demilitarized Zone)

Overview

The DMZ (Demilitarized Zone, 비무장지대) is a military buffer zone established across the center of the Korean Peninsula under the Korean War Armistice Agreement (정전협정, 휴전협정) signed on July 27, 1953. Stretching about 248 km in length and 4 km in total width—2 km on each side of the Military Demarcation Line (MDL)—this area is regarded as the last remaining symbol of the Cold War in the world and, at the same time, as a natural treasure trove where a pristine ecosystem has been preserved because human feet have not reached it for decades.

Main Content

Background of Establishment and Legal Basis

The DMZ was established under Article 1 of the Armistice Agreement concluded between the United Nations Command and the North Korean and Chinese sides to bring an end to the Korean War of 1950–1953. Because the Armistice Agreement legally stipulates a state of "truce" rather than a "peace treaty," the two Koreas remain technically in a state of war. Since the signing of the agreement, the boundary markers along the MDL have been managed through numerous Panmunjom talks and military working-level talks.

Geographic Composition

Military Demarcation Line (MDL): The de facto boundary line dividing North and South, with 1,292 boundary markers erected along it.

- Southern DMZ: The 2 km zone south of the MDL, under the jurisdiction of the United Nations Command.

Northern DMZ: The 2 km zone north of the MDL, under the jurisdiction of the Korean People's Army.
Civilian Control Line (민통선): An area 5–20 km south of the southern limit line of the DMZ, where civilian access is controlled.
Panmunjom (Joint Security Area, JSA): The site used as the venue for talks at the time of the 1953 Armistice Agreement, which still functions as a channel of contact among the two Koreas and the UN Command.

Ecological Value

Having been untouched by human hands for nearly 70 years, the DMZ has become a refuge for endangered species. Rare flora and fauna inhabit the area, including red-crowned cranes, white-naped cranes, gorals, and Asiatic black bears (near Mount Seorak), forming a complex ecosystem that blends wetlands, plains, and forests. In 2019, the DMZ area was discussed as a candidate for a UNESCO biosphere reserve.

Military and Political Significance

The DMZ is the frontline where the military forces of the two Koreas directly face each other, and the risk of accidental clashes is ever-present. Incidents large and small have repeatedly occurred, including the 1976 Panmunjom axe murder incident, the 2015 wooden-box landmine provocation, and North Korea's demolition of the inter-Korean liaison office in 2020. Through the 2018 Panmunjom Declaration and the September 19 Military Agreement, the withdrawal and pilot withdrawal of GPs (guard posts) and the demilitarization of the JSA were pursued, but tensions later mounted again.

Tourism and Symbolism

On the southern side, the DMZ Peace Trail, the Dora Observatory, Imjingak, and the Third Tunnel are operated as tourism and security experience courses. The DMZ is a space that symbolizes both the pain of division and the yearning for peace, and it is frequently referred to in the international community as a "symbol of peace."

Recent Developments

In 2023, the Yoon Suk Yeol government took steps to suspend the effect of the September 19 Military Agreement, and in June 2024, as North Korea launched trash balloons toward the South, tensions in the DMZ reached their peak. In the second half of 2024, the restoration of GPs by both Koreas and the resumption of loudspeaker broadcasts toward the North followed. Meanwhile, in the ecological and peace spheres, international cooperation discussions to inscribe the DMZ as a UNESCO World Heritage Site and biosphere reserve continue, and local governments in the border regions of Gyeonggi and Gangwon are pursuing projects to create a DMZ peace tourism belt. As of 2025, the DMZ is drawing attention as a space that simultaneously bears two contradictory faces: military confrontation and peace and ecological value.