wooden staircase on the sidehill seen from a higher perspective, river black ernz

background black bridge clear cloudy concept countryside course creek crystal day ecosystem environment ernz europe exterior flowing foliage forest fresh green higher hiking hill landscape luxembourg luxemburg mountain mullerthal natural nature nobody outdoor park path perspective plant reserve rill river route rural scenic season seen sidehill staircase stairway step stone stream tourism trail tranquil travel tree trees valley vegetation view water watercourse wild wilderness wooden woods