The park has an area of 900 hectares in the heart of the Maremma Laziale and is crossed by the river Fiora. Along the route of the river are numerous waterfalls and open inlets where the river forms small lakes: one of the largest is that of the Pelican.
The park has beautiful natural features, rich in olive plantations and vineyards. In small valleys large areas of pasture open up, where you can meet Maremmane cattle and horses in the wild.
Inside the park there is the ancient Etruscan city-state of Vulci and many an Etruscan necropolis.