Corsica is the most mountainous Mediterranean island. The low ground has a Mediterranean climate. Summers are hot and dry. Winters are mild with moderate rainfall. The climate of the high ground is cold and is wetter. The natural vegetation is Mediterranean forests, woodlands, and shrubs. The mountains are rich of forests of oak, and pine, except for the high ground. Much of the coastal lowlands has been cleared for agriculture, which has reduced the mountain forests considerably. The island has a natural park (Parc Naturel Régional de Corse), which protects thousands of rare animal and plant species. The park was created in 1972 and includes the Golfe de Porto, the Réserve Naturelle de Scandola (a UNESCO World Heritage Site), and some of the highest mountains on the island. This park is protected.