Baekdu-san  백두산
the sacred "White-Head Mountain" of the North
When the mystical Buddhist/Daoist monk Myocheong raised a
significant rebellion around 1130
(mostly based on his advocacy of
moving the capital northwards to achieve a superior position according to
his
Pungsu-jiri readings) and had a new palace built in Pyeongyang,
some Confucian scholars supporting him approved of his
constructing eight shrines for nation-protecting/benefiting
"Immortals", and advocated that the Spirits of Baekdu-san and
Taebaek-san be the first ones enshrined.
Left: The peak from above, frozen in winter,
with the Chinese name of Cheonji Lake
displayed, from a geography website.
Still  Under  Construction
I have not yet been there; these images are from North Korean tourism brochures.
Cheonji-ho in the winter, a sight few people ever get to see   (KNTO photos)