djerdap national park between kladovo and donji milanovac

scenic gorge nature rocky border national blue rock canyon sunny green river mountain park flow serbia landscape danube high bank geology gate tree attraction morning outside viewpoint peak mount depth natural cliff background environment travel summer hiking wide panoramic panorama iron outdoors vertical wild vale romania deep trekking narrow cauldron djerdap kladovo donji milanovac view ploce narrowest deepest left peaks miroc veliki mali strbac