mudflat hiking and ferry in wittdün channel, amrum island, north frisia, schleswig-holstein, germany

activity amrum beach boat channel coast europe european ferry ferryboat ferryservice frisian island german germany group hikers hiking landscape leisure mud flat mudflat nordfriesland north friesland frisia outdoor passenger ship transport people recreation sand sandflat schleswigholstein sea tourism tourists vacation vessel wadden waddensea walkers walking water wittdun wittdafrac14