lifebuoy and windmills at hamburger hallig, gerrmany

plain grassland grass field landscape plateau horizon pasture badlands meadow sky agriculture hamburger hallig small uninhabited salt marsh island northern germany wadden sea national park visitors exploring area structures vast tidal flats marshes provide rare opportunity experience unique wildlife coastal region north nature natural lifebuoy windmills gerrmany coast schleswig-holstein connected mainland causeway explore bird popular birdwatching wind mill power energy electricity plant environment green ecology technology industrial