A waterfall is a form of water flow in nature where a river or stream falls vertically from a high point.


Waterfalls are natural features that vary in form, with some reaching hundreds of meters in height and others only tens of centimetres.


Waterfalls are usually formed by the erosion of water flowing over rocks or cliffs, and some are formed because of geological formations.


Waterfalls are of great ornamental value in nature and attract a large number of tourists to see them.


Waterfalls can be divided into several forms, the most common being single-stage waterfalls, where a river or stream falls from a high point in one go. There are also stepped waterfalls, where the waterfalls then travel a horizontal distance to fall again. In addition, there are more levels of cascading waterfalls, as well as special forms of hanging waterfalls and so on.


The height of the waterfall, width, water volume and speed of water flow, and other factors will affect its ornamental value. The higher the height, the greater the volume of water, and the faster the speed of the waterfall, will usually give a more spectacular visual impact.


The natural environment around the waterfall will also affect its ornamental value, such as cliffs, rocks, trees, etc., and can add a lot of colour to the waterfall.


There are many famous waterfalls in the world, the following are a few of the more famous ones.


1. Niagara Falls: located on the border of the United States and Canada, is one of the most famous waterfalls in North America, but also one of the world's largest waterfalls.


2. Victoria Falls: located on the Zambezi River in Africa, is one of the world's largest waterfalls, but also a World Natural Heritage Site.


Victoria Falls is about 1.7 kilometres long, reaching a height of 108 meters, the flow of water is very large, so it is also known as "the world's largest water curtain".


3. Iguazu Falls: located in South America at the border of Brazil and Argentina, is one of the most beautiful waterfalls in the world. Iguazu Falls consist of 275 waterfalls, the most famous of which is located on the Argentine side of the Garganta del Diablo.


4. Yellowstone Falls: located in the United States Yellowstone National Park, is one of the most famous attractions of Yellowstone National Park. Yellowstone Falls consists of two waterfalls, the upper and lower, reaching a height of 94 meters.


5. Angel Falls: located in Venezuela, South America, is the world's highest waterfall. The height of Angel Falls reaches 979 meters, and the water flow is also very large, so it is also known as "the world's largest waterfall".


Each of these waterfalls has its characteristics and is one of the most visited attractions in the world.


In short, waterfalls are one of the amazing landscapes in nature, and their different forms and unique features make them an unmissable sight for people travelling and sightseeing.