Closely guarded area ???????????

I didn't see one guard except for the staff at the entrance.

While everyone there when I was seemed just to be sightseeing and having a good time, it would be very easy to be mugged there if alone.
If local criminals or desparate persons wanted a bit of hard currency, camera gear etc there are easy pickings there.

I know I was a bit suspicious of one local dude but we just chatted and I took a picture and moved on.