Baekdu Mountain

Baekdu Mountain or Changbai Mountain is a volcano on the border between North Korea and China. This mountain is 54.5% in North Korean territory, 45.5% in China. The Korean name is Baekdu-san. It is means White head mountain. The China name is Changbai-shan. It is means Snow piles up on the large mountain. 
Baekdu has large crater lake, It is called Heaven Lake. Koreans call it "Cheon-ji" lake, Chinese called "tiandi" lake. It is 2,744 metres above sea level. The Beijing Olympic torch was lit on Baekdu/Changbai Mountain. Heaven Lake is the caldera made by a gigantic eruption in 969 AD (± 20 years).