brown Desert Mountains Dirt fins formation green hoodoos limestone red rock rust sand Slot Canyons spires springtime Utah ancient architecture damaged decay decayed deserted mountains outlook perspective Remains rocks ruin ruinous view vista wall window windows Australia blue bush central Australia clear-sky desert-country desert-region dry foliage gully height high hill hot inland outback rocky rough rugged scrub shrubbery shrubs sky sunlight sunshine terrain textures trees vegetation Alice Springs hills historic mountainous ridge