North Korea has erected a concrete wall along the easternmost part of the inter-Korean border in recent months, in what could be a preview of plans to further fortify the demilitarized zone (DMZ) in line with efforts to completely sever all connections to the South.

Construction of the wall started in the spring around 1 mile from the Military Demarcation Line that divides the DMZ, according to NK News analysis of satellite imagery. The barrier stands at least 13 feet tall (4 meters) and currently stretches 1,900 feet (600 meters), though construction is still ongoing in the area.