scheissendempel waterfall, river black ernz with stone bridge covered with snow, mullerthal trail in waldbillig, luxembourg

ardennes basalt berdorf black bridge canyon cave consdorf covered echternach ernz erosion europe forest formation frozen geology gorges hiking hohllay huel landscape lee loup luxembourg luxembourgish mountain mullerthal nature outdoors perekop river rock rocks sandstone scheissendempel schiessentümpel snow stone swiss switzerland toursim trail travel tree trees valley waldbillig water waterfall winter wintern wolfschlucht woodland