[해외자료] North Korea’s Punggye-ri Nuclear Test Site: Floodwaters Wash Out Bridges and Limit Access to the Test Tunnels

...indicates that the portal area of North Korea’s Punggye-ri Nuclear Test Site incurred minor storm damage after the heavy summer rains, a pattern observed following the monsoon season year after year. Beyond flood-related activity, little else appears to have changed since our last update. Notably, no recent work has been detected either at Tunnel No. 3 ( South Portal) or Tunnel No. 4 (West Portal).

[해외자료] Punggye-ri Update: No Indications of Test Preparations

...org/punggye-ri-update-new-activity-at- tunnel-no-4/"previous report, satellite imagery of the Punggye-ri Nuclear Test Facility acquired during the past two months shows no significant changes to the area immediately outside the portal to Tunnel No. 3 (also known as the South Portal). This lack of any significant new external developments is not unexpected as both the United States and South Korea have long assessed...

[해외자료] Punggye-ri Update: Flood Mitigation

...or changes to the area outside the portal for Tunnel No. 3 (also known as the South Portal), within whichthe United Statesand South Koreahave assessed that North Korea...

[해외자료] Punggye-ri Nuclear Test Site: Work Continues to Restore Tunnel No. 3

Commercial satellite imagery of the Punggye-ri Nuclear Test Site from April 26 indicates further efforts to restore access to the Tunnel No. 3 complex, formerly referred to as the South Portal.

[해외자료] North Korea’s Punggye-ri Nuclear Test Site: A New Practice Creates a New Analytical Challenge

Recent commercial satellite imagery of the Punggye-ri Nuclear Test Site indicates efforts to restore Tunnel No. 3 (formerly referred to as the South Portal area) continue. Spoil displaced while trying to create a new entrance to the two test tunnels has been spread over the nearby access roads. This is likely an effort to improve their durability, although it makes it more difficult to assess the...