The state-owned forest of Pietralunga-Bocca Serriola

The forest is rich in wildlife and extends around the small medieval villages of Pietralunga and Montone, it is bounded to the North by the wooded rump of the “Alpe della Luna”, to the southwest by the Tiber Valley, and to the East by the Serra di Burano and the rugged limestone peaks of the Umbria-Marche Apennines.
The Regional Council mentions the Forest as a biotope of particular naturalistic interest, presenting diversified internal territorial environments, provided with suitable instruments for preservation and development:

The Carpina Valley: the river Carpina, left tributary of the Tiber, draws with its winding course a magical scenery: an uncontaminated environment, rich in botanical rarities (plants like the black alder and the holly) and landscapes (waterfalls, natural pools, wooden bridges, old mills).
Its arenaceous-marl substrate is mainly waterproof with the result of an alternation of
dry periods in summer and periods with violent floods in autumn and spring.

After overflowing the banks, the water floods meadows and runs among the logs crushing the shrubs and uprooting the trees at their base:
It saturates the soil making it poor in air and oxygen: under these conditions only a few species survive: willows, poplars and alders, which together form the Riparian Forest.

The naturalistic Oasis of Candeleto: it is a wide and varied protected area, covering about 1,000 hectares on the hill of Candeleto, between the valleys of the rivers Carpina and Carpinella.
The top of the hill called Monte Croce (735 m altitude), is covered with vast forests of black pine, spruce and Scotch pine as result of reforestations carried out at the beginning of the century and giving the landscape a typical Alpine aspect.

Rodents live there in larger numbers than other species: squirrels, fond of pine nuts, the dormouse and the hazel dormhouse.
The rest of wildlife is concentrated along the slopes of the hill of Candeleto, where deciduous forests (oaks, maples, hornbeams, sorbs and cherry trees), alternating with pastures and clearings, offer safe havens and plenty of food.

Here foxes, wild boars, badgers and porcupines live together while magpies and jays fly circumspect
from branch to branch and the kestrel, by day, and the tawny owl, at night, cover the sky.

The naturalistic oasis of Varrea: it is a protected area consisting of over nine hundred hectares of uninterrupted forest with Turkey oaks and beech trees covering the slopes of three deep valleys. It is a natural refuge for a small family of wolves that give their name to the wonderful trail that crosses it: the rings of the Wolf.
The summit area, characterized by strongly eroded slopes, with outcropping bare rock (in some traits forming striking gullies) constitutes an exceptional balcony looking on mountain ranges: Serra di Burano, Monte Nerone, Monte Catria and Monte Cucco.

In the forest of Pietralunga ancient buildings rich of art and history still survive, isolated and sometimes abandoned.