gravel limestone pebble pebbles river riverbed rock rocks sandstone shale slate stone texture bed bedrock dry small smooth stones tiny aurthur's pass dried up lupins mountains new zealand panorama panoramic rail stream sveres valley view vista wide aerial aeroplane airplane angles appearance arial below bushland central-Australia country-side distance distant expanse flying formations from-above geologically-significant height high isolated landscape lined lines looking-down mountainous movement moving outback panoramic-views remote riverbeds rough rugged rural scenery scenic shadows sightseeing sparse sunlight sunshine terrain travel travelling undulating valleys vegetation