Passenger services commence on Incheon Subway Line 1 extension, South Korea July 2, 2025 | Asia Pacific News, News Passenger services have commenced on the Geomdan Extension of Line 1 of the Incheon Subway network. The extension spans 6.8 km and covers three stations. The extension has been developed at an investm... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password