arid Australia blue clouds country diminishing distance distant environment environmental erosion freshwater ground ground-water lake lake-side land landscape limited natural-environment natural-landscape outback patterns receding rural sand shrinking sky Soil surface surfaces texture textured textures trees vegetation water water-resources wetland reflections abandon abandoned abstract antique backdrop background black copy corrode corrosion cracks derelict ferric ferro ferrous flake flaking grunge grungy industrial iron metal neglect neglected old orange oxidation paint patina peal pealing pitted rust rusty scratch scratched scratches space steel vintage weathered white access-denied advice alert appropriate-behavior appropriate-behaviour avoid care concern danger dangerous denied directions eroded hillside no-access not-allowed not-permitted permission-denied prohibited prohibition protect protection red risk risks risky rules safety sign signs subsidence warning warning-sign ancient cliff color colour copyspace dressed erode face fossil geological geology grain grainy grit gritty limestone mason masonry material outcrop oxide pattern rock rockface rough sandstone sandy sediment sedimentary stone wallpaper