background beach coast coastal coastline colors colours communication conservation conserve conserving contrast contrasting cultivating cultivation direction directive dune-flora dunes environment environmental flora foliage grass grasses green greenery growing growth light natural nature plants protect protection reclaim reclamation replanting rough salt-resistant sand sand-dunes scrub sign signs tides vegetation angles arid Australia barren bedrock blue-sky brown bush bushland clouds crest drought drought-stricken dry geological-formation geology height high hill hot inland isolated landscape outback outcrops remote ridge rocks rocky rugged shadows shapes shrubbery shrubs sky slopes sparse stone stones sunlight sunshine terrain textures trees backdrop leafy leaves levels ocean ocean-edge ocean-waterline path track water waterline color colored colour coloured layers sea seashore seaside shade shore shoreline Sizes stony surface surfaces surfacing textured tidal tide varied variety abstract appearance Australian blue central central-Australia coloring colouring descriptive desert-country desert-region distance distant dry-brown-land far gravel ground perspective perspectives