The Rif region receives more rainfall than any other region in Morocco, with some portions receiving upwards of of precipitation a year. The western and central portions are more rainy and are covered in forests of Atlas cedar, cork oak and holm oak, as well as the only remaining forests of Moroccan fir, a subspecies of the Spanish fir. The eastern slopes receive less rainfall, and there forests consist mainly of pines, particularly the Aleppo pine and the maritime pine, as well as tetraclinis.