Opal 4-1

Google maps image of Jugroom Fort (Most recent) (31°04'01.6"N 64°10'11.5"E);
You can tell this is this fort as it has the old cross path and the google maps lines up with the diagram you posted above.

And DCS map of the location of Jugroom fort (31°04'01"N 64°10'11"E) which is different, but its DCS and not an exact representation.

 
 
And after a bit of detective work on Google earth;
Jugroom Fort 2002;

 
And in 2009, basically levelled!