arid Australia brown bush bushland central-Australia desert-country desert-region dry height high hot inland outback outcrop ridge rocks rocky rough rugged scrub shrubbery sunlight sunshine terrain textures trees vegetation foliage hill light rustic shrubs sky stepping-stones steps abstract Australian background black boy descending dried fronds grass tree hanging layered layers leaf leaves lines plant remainder slow-growing spiky spiny leaves strands texture unusual Xanthorrhoea Alice Springs central Australia decoration decorative display garden gravel park appearance blue central coloring colors colouring colours contrast contrasting descriptive distance distant drought dry-brown-land far ground outcrops perspective perspectives formations rock-formations