stairway cut into a rock in mullerthal, luxembourg

rock wall tree ruins geology terrain soil trail wood plant nature cliff water formation temple stream flower wilderness country road curve mullerthal luxembourg rural region east canton echternach spectacular geological cliffs walk forest area located sauertal berdorf waldbillig hiking trails build offer ways explore stair stairway stairs walking stairways hazard moving barrier cut luxemburg lux grand duchy europe waldbalaquo lleg kanton mafrac14 llerthal