Kkachisan Station is a transfer station for Line 5 and the Line 2 branch line, located in Hwagok-dong, Gangseo-gu, Seoul, at the entrance of Hwagok Tunnel. Passengers can transfer between the Line 2 branch line and Line 5, and Kkachisan Market is nearby, so the station sees a large number of riders. The platforms are on the fifth basement level, making the station fairly deep. There is no elevator that goes from the entrance to the platforms in one trip, so moving through the station with a stroller is difficult.