The Gran Sasso and Monti della Laga National Park watches over a vast mountain area of the Appenines. Horses, cattle and sheep graze on the mountain plains. The animals are brought in at night in simple shelters, known as 'stazzi'. The mountain plains mark the boundaries between the mountains colonised by man and the reign of nature. At the height of the snowfields the landscape is dominated by rocks, where the chamois live.