Afsluitdijk and Houtribdijk Delineating the IJsselmeer, Netherlands52.7N 5.3E
This APM image shows the Afsluitdijk, a major causeway in the Netherlands, running 32 kilometers from North Holland province to Friesland province. It is visible here as a light green line separating the Wadden Sea (part of the North Sea, above) from the IJsselmeer (below).
Also visible near the bottom of the image is the Houtribdijk, a 30-kilometer-long dike connecting the cities of Lelystad and Enkhuizen. On one side of the dike is the Markermeer (bottom) and on the other is the IJsselmeer.