North Korea's Upgraded Nuclear Test Site Is Ready

Location of possible command bunker at suspected nuclear test tunnel at Pung-gye-Ri nuclear test site in North Korea

Revealed: North Korea's Upgraded Nuke Test Site -- CNN

Satellite imagery of a North Korean nuclear test site identifies what could be key installations that would likely play a prominent role if Kim Jong Un orders a test, which the government threatened to do on Thursday.

The analysis of the Pung-gye-Ri Nuclear Test site by U.S.-Korea Institute at Johns Hopkins University’s 38 North blog shows recently completed structures essential to an underground nuclear weapons test.

One is believed to be a command and control bunker. Another photo shows what appears to be a radio relay system that zigzags through a valley, which the 38North analysts believe could be used as part of a communications system linking the bunker to the North Korean leadership in Pyongyang.

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My Comment: I guess they are serious about conducting their third nuclear test.