Culemborg, the Diefdijk at the junction with the A2 freeway with the kolk de Waai at the top of the picture. The diefdijk is part of the Nieuwe Hollandse Waterlinie. The opening serving the passage of the A2 can be closed with concrete beams when there is danger of high water in the rivers. (c) April 17, 2022 Aerophoto-Schiphol | aerial photo 307757