A waterfall is a natural feature where water cascades over a vertical drop or cliff, creating a stunning visual display. Waterfalls can vary in size, from small streams to massive torrents, and are often found in mountainous or hilly regions. They are formed through the erosion of rock layers, where softer rock erodes faster than harder rock, leading to the creation of a drop. Waterfalls are not only beautiful but also play an important role in the ecosystem. They provide habitats for various species of plants and animals, and the mist created by falling water can support unique vegetation. Famous examples of waterfalls include Niagara Falls and Victoria Falls.