Troops from North and South Korea have started removing some of the more than 800,000 landmines buried along their border, officials say.
In the South, clearing has started at the heavily fortified Joint Security Area (JSA) in the village of Panmunjom.
Mines will also be removed from a separate site where hundreds of soldiers were killed in the Korean war.
The move was agreed when the leaders of the two Koreas, Kim Jong-un and Moon Jae-in, met last month in Pyongyang.
All landmines in the JSA, which is the only portion of the Demilitarised Zone (DMZ) where forces stand face-to-face, are expected to be removed by military personnel within the next 20 days, South Korea’s defence ministry said in a statement on Monday.
When the work is completed, guard posts and weapons will also be removed, leaving unarmed troops stationed in the area as part of measures to manage tensions along the border, the statement added.