The cork plantation represents the most recognizable wood vegetation of the Reserve, and for this reason it gives it the name. It covers the sunniest slopes, where together with the cork oak also cytisus, cistus, and heather grow. The rich undergrowth is characterized by many species typical of the Mediterranean maquis such as strawberry-trees, lentisk and others.
It is the most beautiful valley of the Nature Reserve. It covers the most interesting habitats of the Reserve and ends in Valle dell'Acqua Traversa. From the valley it is possible to reach the most characteristic habitats such as the fresh wood, the Mediterranean maquis, the cork plantation, and the wetland. Insugherata Valley also presents some agricultural fields and pastures.