This is an aerial photo of the area from the "SPIN 2" satellite,it is the best detail I can get for free, without paying the $20 fee for a higher resolution image, but I am tempted to buy it, so I can get a better look at the elusive "Turm 2"...

Below, is an excellent model diorama of the of the Four gun casemates and other structures which made up "Batterie Todt"
It shows all the ancilliary buildings such as ammunition bunkers,personell shelters,anti-aircraft gun posts and also the Harzingelles farm in between "Turm 2" and "Turm 3".The farm no longer exists....