山海関
At the edge of the Bohai Gulf is Shanhai Pass, considered the traditional end of the Great Wall and the "First Pass Under Heaven". The part of the wall inside Shanhai Pass that meets the sea is named the "Old Dragon Head". north of Shanhai Pass is Jiaoshan Great Wall ( "Jiāoshān Chángchéng"), the site of the first mountain of the Great Wall. northeast from Shanhaiguan is Jiumenkou "Jiǔménkǒu"), which is the only portion of the wall that was built as a bridge.