abstract art background brown closeup color design granite grunge macro natural stone texture abandoned Cornish cornwall desuetude distorted disused England english gnarled Great Britain heap mosses mossy nature old overgrown pile quarry rocks spoil stunted trees twisted erosion layers rock rock face sediments Zion National Park forest mountains pebbles river stones stream walls coastline flowers hillside red scene valerian view wales wall water welsh wild garden green halophyte leaves plant pointed rosette sharp spotted succulent xerophyte xerophytic Anthus petrosus bird feeding rock pipit Corydalis fumitory summer wiltshire yellow flower spike spines swirl backdrop black concrete gray grungy natural texture pattern textured urban