cliffs above the road near berdorf in luxembourg

rock tree sculpture terrain art geology monument plant formation statue water cliff park nature ruins wilderness boulder waterfall cliffs berdorf luxembourg mullerthal rural region east canton echternach spectacular geological walk forest area located sauertal waldbillig hiking trails build offer ways explore road erosion edge stone crumbling control eroded root plants earth landslide luxemburg lux grand duchy europe waldbalaquo lleg kanton mafrac14 llerthal