landscape of the danube river in slankamen, vojvodina, serbia, during a cloudy 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 environmental resource riverbank riverine afternoon cloud cloudy balkans calm central duna eastern european forest leto natural nautical sky srbija travel vojvodina tree slankamen environment riverside