It is one of the wildest regions in Europe that has meant a range of rare species are still able to survive here including wolves, wild boars, otters, wildcats and around 150 species of birds including eagles. The granite topped mountains are covered in heather with the lower lying areas cloaked in oak forests and grassland through which several rivers flow through the mountain valleys. The mountains are made up of both calcareous rock and granite outcrops at the highest elevations. The woodlands dominated by Pyrenean oak and chestnut are some of the most extensive woodlands and best conserved of its kind in Europe. You can see the best examples of this woodland type in the central area of the park. Alder, willow and ash are more dominant in the low lying riparian areas and birch is most commonly found at the higher
