In the area of the Cecina Valley one can find vast zones covered by forest a natural resource that is rich in animal and plant species. Together these areas form the Berignone-Tatti and Monterufoli Forests, public property under the management of the Comunità Montana (Mountain Forest Management) of the Cecina Valley, which is included in the system of Protected Areas of the Region of Tuscany.

The two forest systems are located on the right bank and to the south of the mid-course of the Cecina Berignone Forest is located on the border of the Province of Siena. At one time it was famous for wild boar hunting and was used for a long time to produce the fire wood used in Volterras saltworks.

The Tatti brush just to the north of Berignone was known in the last century as the "woods for the poor" as it provided the Volterra countryside with its firewood.