Great Train eXpress is a higher-speed commuter rail network in the Seoul Metropolitan Area project consisting of three separate lines, named GTX-A, GTX-B and GTX-C, and scheduled for completion in 203

Dongtan station is a station on the Suseo high-speed railway, SRT, and GTX-A. The latter began to operate in December 9, 2016. This station is in the Yulhyeon Tunnel.