What is "sanggamryong"

Sanggamryŏng, also known as Shangganling in Chinese, Triangle Hill in South Korea, and Jane & Russell Hill in United States is a mountain pass in central North Korea.

The mountain pass is part of the Triangle Hill Complex that is roughly 4 km north by northeast of Kimhwa. Situated in the valley between the Jane Russell Hill and the Sniper Ridge, the hamlet became famous in China due to the Battle of Shangganling, a large-scale battle in the Korean War. By the time the fighting broke out, the hamlet had already been leveled by bombings with most of its residents displaced, thus it played no role in the battle itself.