Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Ujangsan Station is a station on the Seoul Subway Line 5. It is named after a nearby mountain to the east. This station is notable for being the first one operated by the Seoul Metropolitan Rapid Transit Corporation to have platform screen doors. Seoul Subway Line 5 of the Seoul Metropolitan Rapid Transit Corporation, dubbed the purple line, is a long line crossing from the west to the east across the Seoul National Capital Area, South Korea. The line was built 1990-96 and is an important east-west link connecting Gimpo Airport, the Yeouido business area, downtown Seoul, and the Gangdong residential districts. Line 5 holds the distinction of being the only subway line in Seoul to cross under the Han River, which is done at two points (between Mapo - Yeouinaru and Gwangnaru - Cheonho).