Full of contrast, the different altitudes and associated climates of the sierra create a verdant island in a sea of semi-desert. The average altitude of the park is around 800m above sea level reaching 1583m at its summit.
Above 700m the forest is mostly Aleppo pines with Pinaster and Corsican pines on the higher slopes. Oaks and Maples are also found in some protected areas such as the Leyva valley and Rio Espuña.