Seoul Yangcheon Ancient Fortress Site서울 양천고성지

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Seoul Yangcheon Ancient Fortress Site is a temoe-style mountain fortress, a type of fortress whose walls ring the top of a hill. Here the walls enclose the summit of Gungsan Mountain in Gayang-dong, Gangseo-gu, Seoul, along with the upper parts of its main ridge and branch ridges. Gungsan sits where the Anyangcheon Stream meets the Hangang River, which made it an important stronghold for defending the lower Hangang. On the north, the fortress drops steeply toward the Hangang River, while the southern side slopes gently. The fortress is recorded in several old texts, including the Sinjeung Dongguk Yeoji Seungnam, the Yeojidoseo and the Daedongjiji. Traces of the walls, such as foundation fill stones and wall stones, can still be seen. A story says that during the Imjin War, General Gwon Yul stayed here before crossing the Hangang River and winning the battle at Haengjusanseong Fortress. Together with Haengjusanseong and Odusanseong fortresses, it was a key base for defending the Hangang River.