Jiji Press WASHINGTON (Jiji Press) — Recent satellite imagery shows “significant movement” at a tunnel complex that has not been used in a nuclear test at the Punggye-ri test site in northeastern North Korea, a U.S. institute said Monday.
The imagery has shown “significant movement of equipment, mining carts, material and netting within the area of the West Portal” at the test site, according to the U.S.-Korea Institute at Johns Hopkins University’s School of Advanced International Studies.
The West Portal is a “yet unused tunnel complex” where “little or no activity” has been seen for the past several months, the institute said.
North Korea used the North Portal for its sixth nuclear test, conducted on Sept. 3.
Satellite imaginary taken a few days after the test confirmed the presence of mining carts and other equipment outside the West Portal, it said.
Such moves, which have been continuing for several weeks since the test, provide “sufficient evidence that mining personnel have been inside the West Portal,” the institute said.
Some structures set up in the North Portal before the latest nuclear test have been removed. Numerous landslides were observed near the tunnel complex after the test, according to previous reports of the institute.