A geographical feature that is a large, flat, and elevated landform is known as a plateau. Plateaus can form due to various geological processes, including volcanic activity, erosion, and sediment deposition. They are characterized by their relatively flat terrain at high elevations, often surrounded by steep slopes or cliffs. Plateaus can be found in many regions around the world and play a crucial role in local ecosystems, serving as habitats for diverse species. Some notable plateaus include the Tibetan Plateau, known as the "Roof of the World," and the Colorado Plateau in the United States.