It is the most recent Park of Lazio, and well represents the volcanic landscape extending on great part of the hilly territory in the north of the Capital. Astride the provinces of Rome and Viterbo, it includes the two homonymous lakes and the adjacent countryside. The lakes are situated at the bottom of a basin linked to the activity of the ancient Sabatino volcano. The belt of hills surrounding its shores enriches the great variety of flora and fauna characterizing the Park. Grazing lands and cultivated fields draw a man-size countryside, in particular in some stretches of the protected area, like Vicarello estate.