stone wall background - building feature. texture of thick and strong wall of rough stones of various s and sizes

stone wall background building feature texture thick strong rough stones various shapes sizes pattern rock resource foundation cobblestone cobble rubble pebble concretion block solid side fortification consolidation reinforcement tower masonry brickwork structure brick weathered clouded stained soiled smeared bedraggled smeary befouled ancient aged olden timeworn geriatric heavy forceful