[1] The granite peak,[2] which reaches an elevation of 2,205 m (7,234 ft), is part of the Hamgyong Mountains.

Political prisoners were reportedly forced to dig tunnels into the southern side of the mountain, at the nuclear test site near P'unggye-ri.

[4] This is where the detonations of the North Korean nuclear tests in 2006, 2009, 2013 and 2016 occurred.

[5] International analysts believe that the sixth and largest explosion, as of January 2024 the last, "made the mountain bulge sideways by about 12 feet and collapse vertically by about a foot and a half", with one seismologist describing the subsequent reaction as the mountain "pancaking".

[6] Hwasong concentration camp, at 549 km2 (212 sq mi) the largest North Korean concentration camp,[7] is located between Mantapsan and Myŏnggan (Hwasŏng).