advice alert announcement appropriate-behavior appropriate-behaviour aware awareness blue color colored colour coloured communicating communication considerate consideration directions Dirt dirty disposal dispose garbage informing lettering letters reduce responsible rubbish rubbish-reduction sign signs unwanted waste waste-disposal waste-reduction wording words appearance Australia Australian brown bush coloring colors colouring colours contrast contrasting dried drought dry dry-brown-land drying flat grass grasses hardy light outback perspective perspectives pools puddles river river-bed rough rural sand sandy scrub shrubbery shrubs survival trees vegetation waterless abstract aged angles background beam beams connected cracked cracks damage damaged deteriorating grained grains gray grey joined lines maintenance old patterns rustic surface surfaces surfacing texture textured textures timber weathered wood wood-grains wooden woodwork worn backdrop backgrounds barrier blocks constructed craftsmanship creative decorative display fitted large linear secure security solid stone stones stonework strength strong variations variety wall walled well-built cogs decay iron machinery metal paint rivots rust blotched blotches carnivore carnivorous common dark fast forager goanna goulds-goanna goulds-monitor hunter leathery lizard long-clawed loose-neck-folds loose-neck-skin monitor-lizard patterned predator racehorse-goanna reptile reptilian sand-monitor terrestrial