The Heavenly Lake is a crater lake in the Changbai Mountains on the border between North Korea and the People’s Republic of China . It lies on the border between the Chinese province of Jilin and the North Korean province of Ryanggang-do . On the Chinese side, he is part of the territory of the district Fusong the prefecture-level city of Baishan .
The lake lies in a summit caldera of the active volcano Baitoushan (Paektusan) at an altitude of 2189 m. It is one of the tallest, largest and deepest crater lakes in the world. Its area is 9.82 km ², it is 373 m deep.