These look like they have been there a while but the road looks like it is a maintained dirt road so I'm guessing these are still used for something.
Special forces do a lot of training on this base.
This looks like a training location that simulates a SAM battery.
Analogman identifies this as a simulated SA-2 site.
One note: It's an SA-5 site simulated, not an SA-2 site. The SA-2 site you found was the Egyptian one.