Sometimes there are some strange markings on the nautical chart. This time it is a ‘ringdyke. I know the place, my mother grew up in this new polder. A few days before WW2 ended the retrieving German troops mined the dyke and blew two holes in it. The polder flooded and all inhabitants had to evacuate.
I grabbed some of the material I could make and find and composed a very short historic document. Enjoy! – Anarchist Pete. Jump in the thread.