abstract angles appearance backdrop background backgrounds barrier blocks coloring colors colouring colours constructed deteriorating fitted large limestone linear lines mortar perspective perspectives rock rock-face rockface rough secure security solid stone stones stonework strength strong surface surfaces texture textures variations variety wall walled weathered weathering well-built blue color colored colour coloured inside interior internal Rendered rendering surfaced surfacing tactile textured uneven wallpaper architectural basic brick brick-wall bricks brickwork building building-material composite exterior external fading firm old partial partially-painted standard style symmetry varied various white angle cabin circle corner log log cabin nature pattern tree wood architecture colourful ochre pastel structure aligned appearances bright brown colored covered decorated decoration decorative feature horizontal light lined ornamental rows smooth walls