Though not a Ram, I post this here as Wim mentions the IJssellinie in this thread.
The attached picture is a rare period picture of any of the defensive positions. Since this defensive system was highly secret not many photos were taken, or they were kept secret very well. In the Dutch National archive this was the only picture I could find and it shows a tank pillbox being dismantled in 1975, long after the IJssellinie was abandoned.
This is a Sherman V hull which was located along the Rhine river near Arnhem. The railway bridge can be seen in the background.
Source:
http://proxy.handle.net/10648/037909...4-1e3516218c87