A geographical feature commonly created by the action of water over time is a canyon. Canyons are formed through the process of erosion as rivers carve their way through rock layers, leading to deep valleys with steep sides. The Grand Canyon in the United States is one of the most famous examples. They often exhibit stunning geological formations and contribute to biodiversity by providing various ecosystems within their steep walls. Canyons also attract tourists and researchers alike, showcasing the power of natural forces and the beauty of the landscape.