A canyon is a deep, narrow valley with steep sides, often with a stream or river running along the bottom. Canyons are typically formed by the erosion of the land by water and wind over a long period of time. They are common in arid or semi-arid regions and can vary in size from small, narrow ravines to large, deep gorges.
Canyons are primarily formed through the process of erosion. Water from rivers and streams, as well as wind and ice, gradually wear away the rock and soil, carving out the canyon over thousands or even millions of years. The type of rock and the force of the erosional agents play a significant role in shaping the canyon's features.