Sierra Crestellina Natural Park
Sierra Crestellina Natural Area is located in the Baetic Cordillera and consists of a steep crag of Jurassic limestone which rises up out of
the Triassic sandstones of the Genal Valley. The Sierra Bermeja, with its rugged relief, its reddishcoloured peridotites, and its blue-green patches of Spanish fir, gives way - at its western end - to a different type of landscape, of calcareous origin: the Sierra Crestellina massif. This natural area, which covers 478 hectares, is like a little white island of calcareous rock surrounded by dark mountains and acidic soils.
The entire Sierra Crestellina is found within the district Casares. It, along with the Sierra de Utrera massif, represent the only two outcrops of calcareous rock in the entire region, which tends to be dominated by rock of a lead-grey colour. Sierra de Crestellina was declared a Protected Natural Area in 1989 and it owes its name to the shape of the peaks of its summits - these are truly inaccessible "crests" prized by beautiful birds-of prey like the griffon vultures as a nesting place. La Albarrá Stream is the main surface watercourse in the area, though its flow decreases significantly in summer.