landscape of the danube river in slankamen, vojvodina, serbia, during a coudy afternoon, facing a green forest. the danube is the

danube river serbia waterway navigation southeastern europe international blue transport scenery water traffic commercial route dunav reka renak panorama landscape serbian nature tourism fluvial environmental resource riverbank riverine afternoon cloud cloudy balkans calm central duna eastern european forest leto natural nautical navigating quiet scenic season sky srbija travel vojvodina