Abruzzo is known as the greenest region in Europe as almost half of its territory, the largest in Europe, is set aside as national parks and protected nature reserves. There are three national parks, one regional park, and 38 protected nature reserves. These ensure the survival of 75% of Europe's living species, including rare species such as the golden eagle, the Abruzzo (or Abruzzese) chamois, the Apennine wolf and the Marsican brown bear. Abruzzo is also home to Calderone, Europe's southernmost glacier.