Grey, weathered rock with ridges and swirls. Moss and lichen growing in the cracks and crevices. Close up.

abstract algae autumn background bands close up closeup colourful colours creative curbar edge curbar gap dark derbyshire derbyshire peak district dirt dirty england english eroded fall geological geology great britain grey gritstone hope valley lichen mineral morning moss natural nature no people october old pattern ridges rock rock face rough stone strata streaks surface texture uk united kingdom weathered worn