Ralph Apeldoorn: Geniedijk Vijfhuizen
Ralph Apeldoorn: Kunstfort Vijfhuizen
Ralph Apeldoorn: Fort benoorden Spaarndam
G-D-F: GDF2187
G-D-F: GDF_0068
G-D-F: GDF_0065
G-D-F: GDF_0063
G-D-F: GDF_0062
G-D-F: GDF_0058
G-D-F: GDF_0056
G-D-F: GDF_0052
++Gerard++: Doorkijkje bij Fort Bezuiden Spaarndam.
++Gerard++: Damsluis in de Liniedijk
MilanWH: Bunkers in de Hekslootpolder
++Gerard++: Zicht op de Liniedijk
G-D-F: GDF_5428
G-D-F: GDF_5424
G-D-F: GDF_5418
G-D-F: GDF_5417
G-D-F: GDF_5415
G-D-F: GDF_5411
G-D-F: GDF_5402
G-D-F: GDF_5390
G-D-F: GDF_5378