abstract angles backdrop background barrier bolders boulders cemented coated concrete constructed cover covered erosion-prevention fitted hill mortar perspectives random randomly-coursed Rendered retaining-rocks retaining-wall rock rocks rocky rough rugged secure security slope sloping solid stone stone-walled stones stonework strength strong surface surfaces texture textures uneven variations variety wall walled well-built appearance backgrounds blocks colors colours contrast contrasts cracks discoloration foundation foundational growth height high large limestone linear lines moss old perspective plants retaining AC acdc dam DC ecological electric electrical embankment dam flood barrier green power local river barrier plant power power plant retaining dam station water water power appearances artificial artificial-lawn brickwork corner curved curves drive fence fencing flowers garden home house lavender lawn neat path paving pillars shaped shapes shrubs street suburban tidy architectural architecture basic brick brick-wall bricks color colour crack cracked damage damaged danger deterioration exterior external lean leaning split-levels splitting standard strained textured beginning creeper green greenery growing mound new-growth potential small sprouting vegetation brown coloring colouring heritage historic local-stone pattern patterns picturesque rural shape significant stucco traditional