The DeltaÆs forest reservations are protected by law. The sand dunes 200 to 250-meter long shelter a tropical vegetation that can be seen nowhere else at this latitude in Europe: swamp beeches, willow trees, poplar trees, and oaks whose crowns rise up to 35 meters in the air and whose roots run deep in the muddy soil are joined here by creeping plants such as the wild vine, which thrusts its roots on the tree trunks.
