road below the perekop rock in mullerthal, luxembourg

tree green garden jungle forest flower waterway stream woodland water plant leaf bridge nature pond watercourse road cliff mullerthal luxembourg rural region east canton echternach spectacular geological formation cliffs walk area located sauertal berdorf waldbillig hiking trails build offer ways explore perekop rock erosion edge stone crumbling control eroded root plants earth landslide trail hike gravel narrow walking leisure travel country scene countryside season seasonal driving street curve direction marking roads