Sanggamryŏng, also known as Shangganling (Chinese: 上甘岭; pinyin: Shànggānlǐng) in Chinese, Triangle Hill (Korean: 3각고지) 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.
Chae, Han Kook; Chung, Suk Kyun; Yang, Yong Cho (2001), Yang, Hee Wan; Lim, Won Hyok; Sims, Thomas Lee; Sims, Laura Marie; Kim, Chong Gu; Millett, Allan R., eds., The Korean War, Volume III, Lincoln, NE: University of Nebraska Press, ISBN978-0-8032-7795-3