on google, you can take measurements of buried constructions. But I don't know the possible margin of error !
The two VF are not identicals , the left one seems to be larger
The "left VF" is approx. 6,50m X 9,50m
The "right VF" is approx. 6m X 9m = could be a VF 2a
The bigger one is approx. 10,30m X 10,70m
the location of the entrances looks like a ammunition store : 134 , VF 7a , VF 7b...or a "local" model
IGN 1949
IGN 1966
IGN 1970
NARA 18 june , 1945
