salt marshes of east frisian island borkum, view of lower saxony wadden sea national park, germany

borkum coast coastal coastline copy copyspace creeks dike east europe european flat friesland frisia frisian german germany heritage horizon island islands landscape lower marsh marshes marshland national nature niedersachsen ostfriesland panorama park randzel reserve salt saxony sea space tidal unesco vast wadden waddensea water wetland wetlands world