The site has three visible tunnel entrances. Based on satellite imagery, its exact location is in mountainous terrain in Kilju County, North Hamgyong Province. It is south of Mantapsan, west of Hwasong concentration camp and northwest of the Punggye-ri village. The most proximate settlement to the possible nuclear underground test site is Chik-tong, a small populated place located at . Sungjibaegam is a settlement located from the tremor of the 2013 test. Punggye-ri railway station is located at .