Commercial satellite imagery of North Korea’s Punggye-ri Nuclear Test Site from mid-March 2018 suggests that there has been a significant slowdown in tunneling and a reduced presence of related personnel at the site when compared to just two weeks earlier.
Imagery from early March had shown signs of continued tunneling excavations at the West Portal, including mining carts and significant amounts of new spoil deposits. However, imagery from March 17 showed no evidence of tunneling operations or the presence of any personnel or vehicles at any of the support areas including those near the Command Center.
This is an important development given efforts to establish high-level meetings between the United States, South Korea and North Korea. However, whether this is just a temporary development or whether it will continue over time is unclear. Read more here.