[해외자료] Recent Activity Observed at Punggye-ri Nuclear Test Facility
...“Northern Nuclear Testing Site” by North Korea, shows that the road leading into the portal for
Tunnel
No.
3 is clear of snow, indicating ongoing activity. While the nature of this activity is unknown, at a minimum, it indicates that North Korea continues to be committed to maintaining the progress already achieved in the reenabling of
Tunnel
No.
3 and the general health of the facility.