A cascade, often referred to as a waterfall, is a natural feature where water flows over a vertical drop or cliff. This phenomenon occurs in rivers and streams, where the water's movement creates a stunning visual display. Cascades can vary in size, from small trickles to large, powerful falls, and they often contribute to the surrounding ecosystem by providing habitats for various plants and animals. Cascades are commonly found in mountainous regions and can be formed through geological processes such as erosion and sedimentation. Famous examples include the Niagara Falls and Angel Falls. These breathtaking sites attract tourists and nature enthusiasts, showcasing the beauty and power of flowing water in nature.