A natural water cascade

It is the fall of river water from a high place on hard rocks such as (limestone) and soft rocks such as (baby stone), so soft rocks erode at a greater rate than solid rocks, so a steep cliff is formed, which is the waterfall. Niagara Falls, located on the borders of the United States of America and Canada, is one of the most famous waterfalls in the world, and Angel Falls in Venezuela is the highest waterfalls in the world with a height of 979 meters.