On October 25, 1967, the last piece of dike was closed, in the presence of Her Majesty Queen Juliana.

At this location on the Zeewolderdijk, a literary granite stone was unveiled on July 25, 1996. Five flat plates, varying in height and width. The space between the plates is equal to the thickness between the plates. On the front and smallest plate, a poem by Margo Minco is engraved.

erratic lies the water

punishes the dikes, closes and turns

wind-whipped, the reed protects

a sea of land