Australia ayers rock central-Australia desert down under illustration kata tjuṯa landscape rock rural tourism tourist travel travelling Uluru appearance arid Australian brown bush central coloring colors colouring colours contrast contrasting descriptive desert-country desert-region dry dry-brown-land foliage gravel ground hot inland light outback outcrops perspective perspectives rocks rocky rough rugged scrub shrubbery sky sunlight sunshine terrain textures trees vegetation distance distant drought flat grass grasses hardy hilly river river-bed sand sandy shrubs slope slopes sloping survival waterless abstract blue far