mettlach, germany - 07 17 2024: saar river lock and sluice, dam wall top with height impression

waterway bridge canal walkway river water transport vehicle reflection reservoir channel track boat dock infrastructure wall tree lane roof mettlach germany 2024 saar lock sluice dam top small town valley close saarschleife north german area saarland borders luxembourg france idyllic quiet touristic summer bike routes ships passing height impression sarre saravus channeled managed calm schleuse staustufe management shipping tourism travel destination trip famous tourist vacation journey saargebiet der