North Korea has started construction on new factory facilities near existing aircraft plants and an airbase used for recent testing of large and small drones, according to NK Pro analysis of satellite imagery.

The new project in the Panghyon area of southern Kusong started in January, Planet Labs imagery shows, while DPRK leader Kim Jong Un visited nearby Panghyon Airbase to conduct drone tests last week.

Activity started last September at what the U.S. has called the “Panghyon Airfield Repair Base PUG (partially underground)” when a construction worker camp appeared, before several large but