A "massif" is a large, distinct section of the Earth's crust that is typically characterized by its rugged terrain and significant elevation. It often consists of a series of mountains or hills that are connected and rise prominently above the surrounding landscape. Massifs can be formed through various geological processes, including tectonic activity and volcanic activity. Massifs are important features in geography and ecology, as they can influence local climate and biodiversity. They often serve as habitats for diverse plant and animal species. Notable examples of massifs include the Massif Central in France and the Himalayan Massif, which is home to some of the world's highest peaks, including Mount Everest.