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Shanhai Pass or Shanhaiguan is the eastern end of the Great Wall of China and one of its major passes. It commands the narrowest choke point in the strategic Liaoxi Corridor, a crucial coastal landway between the North and Northeast China. It is located in Shanhaiguan District, Qinhuangdao, Hebei province, on the east bank of the Shi River between the Yan Mountains and the coast of Liaodong Bay. In 1961, the pass was selected as a Major Historical and Cultural Site Protected at the National Level by the State Council of China, and it was listed as a World Heritage Site as part of the Great Wall by UNESCO in 1987. The pass is a popular tourist destination at the eastern terminus of the Ming Great Wall. The location where the wall meets the Bohai Sea is nicknamed "Old Dragon's Head" (老龙头). The pass lies nearly 300 kilometres (190 mi) east of Beijing and is linked via the Jingshen Expressway that runs northeastward to Shenyang. Throughout Chinese history, the pass served as a frontline defensive outpost against ethnic groups from Northeast China (Manchuria), including the Khitan and Jurchen (Manchus). Shanhai Pass is the eastern end of the Great Wall, and is the first barrier for guarding the frontier, therefore it is called the "First Pass Under Heaven" (天下第一关).