between mountains and a beautiful cloudy sky, the douro river in the background

mountain hill landscape valley plateau ridge nature alps fell wilderness tree highland plain geology cloud terrain landscape douro-river mountain nature natural agriculture vineyard coleja senhora-da-ribeira carrazeda-de-ansiães trás-os-montes alto-douro river sky perspective mount trip city village panorama europe lake summer forest dusk green scenic tree dirt path portugal adventure swim surf water spring cloudy countryside beauty valley tourism leisure vacation travel attraction alto-douro-vineyard vineyard