oyster stone -piedra ostionera- ashlar rigging on the facade of a building in rota, cadiz, spain

oyster stone piedra ostionera ashlar rigging façade building rota cadiz spain facade -piedra ostionera- construction material used architecture towns province andalusia house abstract pattern molding important monument ashlars wall texture surface rock textured rough brown background typical closeup sandstone sedimentary porous seashells puerto real quarry santa maria fernando chiclana conil chipiona sanlucar barrameda