acacia Africa alone desert farm karoo landscape lonely lucerne plain plains rocks tree trees wheat background black boy brown bush curly dead drought dry gras tree leaf leaves texture vegetation Xanthorrhoea blue crop energy field green HDR Nyberg oil power rape seed sky spring windmill yellow nature outdoor park peak scenery stone summer sun tourism travel Trekking turquoise valley view water wilderness woodland forest moss mushroom buck close-up deer late powerful velvet whitetail eucalypt gum leaves cliffs Dirt fins hoodoos limestone red rust sand Slot Canyons springtime trails Utah windows