500N wrote
Here is something else interesting to look at North North West of the compound.
Their is a OLD square earthen shape but inside this and off to the east it looks like Bomb Craters. Also some other interesting craters to the NW of it and a line of something to the South of the square earthen shape. I'll defer here to the RAF boys - are these bomb craters ?
The bomb craters could also have been from the Iran-Iraq war? The earthen square looks quite old. The Iraqi's used Tu-22 Blinder and Tu-16 Badgers on strikes deep inside Iran. Possibly radar bombing against the target?