of the four main gun pits one is not really accessible as it has been turned into a sunken playground at La Hoguette school a second is used for paintball or airsoft cant remember which ,a third is in private ground (probably the one you mention with the bungalow) and the fourth is in the care of the occupation society,this is the one with the murals which I mentioned ,they are in the generator room and were in excellent condition although apparently not any more