mettlach, germany - 07 17 2024: saar river lock with much water on the waterfall

river reservoir lake waterway water vehicle boating bay boat sea fjord tree mountain canal bridge rapid channel shore mettlach germany 2024 saar lock sluice waterfall small town valley close saarschleife north german area saarland borders luxembourg france idyllic quiet touristic summer bike routes ships passing sarre saravus channeled managed calm schleuse staustufe wall management shipping tourism travel destination trip famous tourist vacation journey saargebiet der