Dangsan is a transfer station between Line 2 and Line 9 on the south side of the Han River in Dangsan-dong, Seoul. Line 2 runs above ground there, and intercity buses to Bucheon and Ilsan stop nearby, with an entrance to the Han River park close by. The escalator in the transfer passage between Line 2 and Line 9 is long and steep, and the Line 2 exits have no escalator. During rush hour, Line 9 is more crowded than Line 2.