More than 200 people are believed to have died in underground tunnels after a collapse at North Korea’s Punggye-ri nuclear facility.
The test site was reportedly badly shaken by the aftermath of the country’s sixth nuclear test, a 100-kiloton hydrogen bomb roughly seven times more powerful than the atomic bomb the U.S. dropped on Hiroshima in 1945.
North Korean sources told Japanese television channel Asahi TV that the collapse occurred in October during the construction of an underground tunnel at the facility.
Around 100 workers were stuck underground and a group that was sent to their rescue were also buried after another collapse, causing a total death toll of around 200.
A series of small-scale earthquakes that followed the September 3 test indicated the facility, built south of the Mantapsan mountain, may no longer be stable enough to conduct further tests.
According to experts, the building of new underground tunnels would indicate a willingness to move the test site to another part of the mountain, as the facility is unlikely to be abandoned.
“If North Korea were to attempt to continue testing under this mountain (such as in the area more to the eastern side), then we would expect to see new tunneling in the future near the North Portal, still under Mt. Mantap,” researchers Frank Pabian and Jack Liu wrote in a report published earlier this month on the North Korea monitoring website 38 North.
SOURCE: SOFIA LOTTO PERSIO