The assignment was to give the Elster Buitenwaarden back to nature. “This used to be agricultural land,” says Martin. “Now it is nature again, with water, nature-friendly banks and grassland rich in flora and fauna.” For example, trenches have been dug to provide space for water. As a result, the historic course of the Lower Rhine has been restored. In addition, the nutrient-rich soil was excavated and sandy soil with good groundwater quality was returned.