view through an optical device reflecting semmering railway with surrounding mountain scenery, krauselklause viaduct in

alpine alps austria blue cloudy europe famous forest green heritage hill krauselklause landmark landscape limestone lower mountain nature outdoors peak polleroswand railway rax rock scenery semmering snow snowcapped summer summit travel tree tunnel unesco viaduct white world village semmeringbahn train coach vagon railroad machine site reflection optical device reflective optics