Heaven Lake

Heaven Lake is a crater lake on the border between China and North Korea. It lies within a caldera atop the volcanic Baekdu Mountain, a part of the Baekdudaegan mountain range and the mountain range. It is located partly in Ryanggang Province, North Korea, at , and partly in Jilin Province, northeastern China.

At an altitude of 2,189.1  , Heaven Lake is the world's highest crater lake, according to the Guinness Book of World Records. The lake covers an area of 9.82  with a south-north length of 4.85  and east-west length of 3.35 kilometres . The average depth of the lake is 213 m and maximum depth of 384 m . From mid-October to mid-June, Chonji is covered with ice.

The crater lake was created by a major eruption in 969 AD .

In ancient Chinese literature, ' also refers to ' . Some other well-known lakes named Tianchi include those in Xinjiang and Taiwan.

In North Korean legend, Kim Jong-il is claimed to be born near the lake on the mountain.

Lake Tianchi Monster

Many believe that the lake is home to the Lake Tianchi Monster. It is unknown if the monster and legendary Kun are related.

On September 6, 2007, Zhuo Yongsheng , shot a 20-minute video of 6 -like, finned "''Lake Tianchi Monsters''", near the border with the Democratic People's Republic of Korea . He sent pictures of the Loch Ness-type creatures to Xinhua's Jilin provincial bureau. One of them showed the creatures swimming in 3 pairs, in parallel. Another showed them together, leaving ripples on the volcanic lake.