The Sierra de Grazelema Natural Park is an abrupt limestone massif reaching 1654 meters at its peak, and encompassing some 53,439 hectares of classic karst landscapes and habitats, including numerous cave and underground river systems considered among the most extensive of the Iberian Peninsular.

This Sierra contains an impressive floral diversity ( over 1300 taxa of vascular plant ) and is notable for containing some of the highest precipitation levels in Spain – an habitat where ‘relic’ forests that existed prior to the last ice age have survived to this day. These ancient ‘cloud’ forests of Abies Pinsapo are the oldest forests of Western Europe and are found only here and in the Moroccan Rif.