Points of interest:
This is a natural mountain pass connecting Andalucia with Castilla la Mancha through the Sierra Morena. The rock structure forms a dramatic landscape with vertical cliffs and unusual rock formations. Los Organos is one such formation of quartzite rock taking the form of giant organ tubes. The river has cut a deep, spectacular gorge in the eastern part.

Forested zones of oaks are in the west of the park.

Flora:
The naturally forested areas have a selection of oaks: Gall oak (Quercus faginea) Holm’s oak (Quercus rotundifolia) Cork oak (Quercus suber) and Pyrenean oak (Quercus pyrenaica). Many pine trees have been planted and the species list includes Stone pine (Pinus pinea), Maritime pine (Pinus pinaster) and Aleppo pine (Pinus halepensis).

The typical Mediterranean scrub is made up of Strawberry trees (Arbutus unedo), Tree heather (Erica arborea), Mastic tree (Pistacia lentiscus), Rockroses (Cistus ladanifer), Myrtle (Myrtus communis), Wild olive (Olea europea), and Sloe (Prunus spinosa).

Fauna:
Numerous species of birds live in the park, from the Griffon vulture to the smaller Rock thrush, Blue rock thrush and Black wheatear. Five eagles can be seen here; Booted, Short-toed, Golden, Spanish Imperial and Bonelli´s.

Iberian lynx is thought to be here in small numbers as are wolf . Other more common carnivores are  fox, ichneumon (mongoose), genet and wild cat. Wild boar and red deer also inhabit the quiet areas.

Also in the area:
In 1212 the Christians fought the Muslim Almohads in the battle of las Navas de Tolosa. This was an important step in the re-conquest.

Important archeological remains within the park are at the Muñecos cave in Santa Elena which contains extremely valuable Neolithic sculptures. In the Las Vacas del Retamoso ancient cave paintings can be viewed.