The coastal mainland holds evidence of the last glacial periods. Stretching along 18 km, moraines can be found, along with active cliffs and a shoreline rich in ancient boulders and pebbles. You should take a closer look at this unusual phenomenon, because it is rare in the Wadden Sea area. Where there is no geest, you will find sea dikes as clear limits between the salty environment in the tidal area and the freshwater environment in the marshes behind the dikes.