It lies within a caldera atop the volcanic Paektu Mountain, a part of the Baekdudaegan and Changbai mountain ranges. It is located partly in Ryanggang Province, North Korea, at 42°00′22″N 128°03′25″E﻿ / ﻿42.006°N 128.057°E﻿ / 42.006; 128.057, and partly in Jilin Province, northeastern China. Heaven Lake has been recognized as the highest volcanic lake in the world by the Shanghai Office of the Guinness Book of Records.[1]