The Paengmu Line is a partially electrified narrow gauge line of the North Korean State Railway running from Paegam on the Paektusan Ch'ŏngnyŏn Line to Musan on the Musan Line. The electrified section runs 111 km from Paegam Ch'ŏngnyŏn station to Yugok, whence the remaining 80.7 km to the terminus at Musan remains unelectrified.