wall structure which consists of stones of different sizes.

stone texture wall structure steinmauer brick surface stonewall pattern old material alt network architecture background mauer kohlef ruhr rost riuhrgebiet rderung land pott pfanne ohfen landstrich ruhrpott nachtigall linie untzertage decoration natural fels stahlindustrie design abstract gold color kohleabbau white kohle struktur steil insdustrie stollen fence ziegelofen braunkohle bergwerk