Kubongsan LineThe Kubongsan Line is an electrified standard-gauge secondary line of the Korean State Railway in South P'yŏngan Province, North Korea, running from Ch'ŏngch'ŏn'gang on the P'yŏngŭi Line to East Namhŭng.HistoryThe line was opened by the Korean State Railway in the 1970s.ServicesThe line serves the February 20 Factory of the Korean People's Army near Kubongsan, as well as the Anju Silicate Brick Factory adjacent to East Namhŭng Station. The brick factory was opened in December 1986.RouteA yellow background in the "Distance" box indicates that section of the line is not electrified.