|Elevation||2,205 m (7,234 ft)|
|Location||Kilju County, North Hamgyong Province, North Korea|
Mantapsan (or Mount Mant'ap, Chosŏn'gŭl: 만탑산) is a mountain in the south of North Hamgyong Province in North Korea. The granite peak  with an elevation of 2,205 m (7,234 ft) is part of the Hamgyong Mountains. It is located on the border between Kilju County, Myŏnggan County and Orang County.
Political prisoners were reportedly forced to dig tunnels into the southern side of the mountain, at the nuclear test site near P'unggye-ri. The horizontal tunnels are believed to be two to three meters wide and high and hundreds of meters long. This is where the detonations of the North Korean nuclear tests 2006, 2009 and 2013 occurred.
- List of mountains in Korea
- Punggye-ri Nuclear Test Site
- 2006 North Korean nuclear test
- 2009 North Korean nuclear test
- 2013 North Korean nuclear test
- Hwasong concentration camp
- "Geographic Names: Mant'ap-san". Geographic Org. Retrieved February 5, 2013.
- "Image shows inside of N.K. nuclear weapons test facility". The Korea Herald, February 4, 2013. Retrieved February 5, 2013.
- "The Terrible Secrets of N. Koreas Mount Mantap". Chosun Ilbo, June 3, 2009. Retrieved February 5, 2013.
- "The anatomy of North Korea’s nuclear test tunnels released for the first time". The Hankyoreh, February 5, 2013. Retrieved February 5, 2013.
- "North Korean Nuclear Test Preparations: An Update". US-Korea Institute at SAIS, April 27, 2012. Retrieved February 5, 2013.
- "The Hidden Gulag – Exposing Crimes against Humanity in North Korea’s Vast Prison System (p. 78 - 79)". The Committee for Human Rights in North Korea. Retrieved February 5, 2013.