Lake Tianchi Monster is the name given to what is said to be a lake monster that lives in Heaven Lake (known as Cheonji in Korean) located in the peak of Baekdu Mountain.
The Chinese name, Changbai Shan (長白山/长白山), means "ever-white mountain". The Manchu name, Golmin Šanggiyan Alin, means white mountain. The Korean name, Baekdu San (백두산, 白頭山; Baekdu-san), means "white-headed mountain". English-language volcanology resources sometimes refer to the mountain as Baitoushan from the Chinese pinyin rendering of the Korean Hanja 白頭山.
More than 50 mammal species and 300 bird species have been recorded on Changbaishan. Mammals include Far East leopard (Panthera pardus orientalis), lynx (Lynx lynx), brown bear (Ursus arctos), Sika deer (Cervus nippon), red deer (C. elaphus), goral (Nemorhaedus goral), wild boar (Sus scrofa), otter (Lutra lutra), and sable (Martes zibellina). Birds include rare species such as black stork (Ciconia nigra), Mandarin duck (Aix galericulata), and scaly-sided merganser (Mergus squamatus). On the northeastern border of this ecoregion there is a vital link in tiger and leopard habitat formed by Hunchun NNR in China and three border nature reserves in southern Primorsky Province in Russia (Kedrovaya Pad, Barsovy, and Borisovskoye Plateau). See Amur-Heilong and the Land of the Leopard.
|A large crater lake, called Heaven Lake (Korean:천지, Chinese:天池), is located within the caldera atop the mountain.|