A map of the DMZ train's route through South Korea on the Gyeongui Line. The line's tracks run through Pyongyang and extend to North Korea's border with China. Anthony Kuhn/NPR hide caption ...

A South Korean train runs on the rail track, which the two Koreas hope to eventually use as an international transport link, near to the border village of Panmunjom in North Korea, in Paju, South ...

TOKYO — A South Korean train rolled across the heavily militarized frontier into North Korea for the first time in a decade on Friday, as Seoul pushed ahead with a plan to reunite the two ...