Very interesting post in Linkedin about grass roots, which shows we still have a lt to learn on this topic : link
29 March 2021 archive
Mar 29
Discovery of ancient levee in the Netherlands
Near the town of Vlaardingen, remnants have been found of an ancient construction that probably served as a low levee. The construction was about 1 metre in height, at least 20 metres long, and consisted of a dual construction consisting of wooden piles and braided willow branches, that was subsequently filled with earth. The levee …
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