North Korea missile bases--satellite views

https://www.armscontrolwonk.com/archive/205935/iranians-in-north-korea/

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 https://beyondparallel.csis.org/undeclared-north-korea-sakkanmol-missile-operating-base/

  The Punggye-ri Nuclear Test Site. Satellite photos revealed mining activity at three “portals” or entrances to underground areas just prior to the last nuclear test.   https://nationalatomictestingmuseum.org/2016/10/11/spot-on-october-7-2016/
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   Overview of the Sino-ri missile operating base, December 27, 2018 (Copyright 2018 by European Space Agency).

1-21-2019       “On 21 September 2004, at the Nodong base located in the hills at Sino-ri, Unjon County, North Pyongan Province, 100 kilometers north of Pyongyang, detected was activity such as movement from underground tunnel hangers of several TEL-mounted missiles, communications equipment, trucks loaded with fuel, and troop movements. U.S. reconnaissance satellite and wireless intelligence analysis revealed joint exercises were underway at not only the Sino-ri Base but at Musudan-ri and Wonsan missile launching units and army, navy, and air bases in about 10 locations with Sino-ri Base serving as the combat command center.”28     https://beyondparallel.csis.org/undeclared-north-korea-the-sino-ri-missile-operating-base-and-strategic-force-facilities/