Very interesting post in Linkedin about grass roots, which shows we still have a lt to learn on this topic : link
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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