Where was the Chosin Reservoir located in North Korea?

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The Chosin Reservoir, also known as the Changjin Reservoir, is located in a mountainous region in the heart of the T’aebaek Mountains in eastern North Korea.12

It is a narrow mountain lake that served as a source of hydroelectric power for the mining industries of northern Korea. During the Korean War, the area surrounding the reservoir became a significant battleground, characterized by its harsh, freezing climate and rugged terrain. The village of Hagaru-ri, which served as a key objective and defensive position for the 1st Marine Division, is situated near the southern tip of the reservoir.21