Sources and image credits
Nieuwe Hollandse Waterlinie: read the water between the forts
Source
Image credits
Aerial view of Fort bij Vechten, taken in April 2013 during works.
Photo: Johan Bakker / Wikimedia Commons · CC BY-SA 3.0 NL · Beeldbron
Tower of Fort Honswijk on the Lek, photographed in September 2016.
Photo: HenkvD / Wikimedia Commons · CC BY-SA 4.0 · Beeldbron
