There appear to be a couple more aircraft at the end of the white taxiway, in front of a cave entrance. It seems unlikely that it will be a large hangar but it could be a repair/servicing facility. No other hangars are apparent - but they may be in the poor resolution side of the airfield image.
There are 4 QRA (Quick Reaction Alert) Protective Aircraft Shelters near the runway end - and a number of primitive revetments scattered alongside the SE taxi track.
At Taechon Airfield to the NW most of the training aircraft are in the revetments.