very curvy mountain road in the eifel on a gloomy spring day

winding wellmaintained waterway walkway vibrant undulating typical trees tree transport trail track terrain surround surface suggests spring smooth sky sharp serene scenic safety road river region plant path park overcast nature natural mountain lush line light leaves lane landscape infrastructure highway guardrails greenery green grass gloomy garden fresh foliage flanked environment eifel diffusing dense day curvy curves creating contrasting bridge asphalt area appears adds country rural scene countryside season seasonal driving street curve direction marking roads