abstract appearance Australian background black boy bush bushland descending fronds grass tree green layered layers leaf leaves light lines outback plant slow-growing spiky spiny leaves standing straight strands sunlight texture unusual upright vegetation wallpaper Xanthorrhoea Australia brown central-Australia desert-country desert-region dry foliage height high hill hot inland rocks rocky rough rugged rustic scrub shrubbery shrubs sky stepping-stones steps sunshine terrain textures trees bush-foliage color colored colors colour coloured colours distinctive flora greenery hardy native native-plant shrub textured bus colorful colourful cool driver movement moving passengers recreational road scene scenery scenic tourism tourist tourists transport trip vehicle view views window wildflowers arid central coloring colouring contrast contrasting descriptive dry-brown-land gravel ground outcrops perspective perspectives country diminishing distance distant drying environment environmental erosion ground-water lake-side land landscape limited natural-environment natural-landscape patterns receding rural sand shrinking Soil surface surfaces water-resources wetland seed-pods central Australia country side expanse flat formations hills panoramic views plains shadows sightseeing speed speeding train train journey travel travelling undulating water pipeline clear-sky clumps grass grass-clumps peaceful quiet dried drought grasses river river-bed sandy survival waterless