Why is Niagara Falls where it is?

The Niagara Falls are located on the border between the United States and Canada, specifically between the province of Ontario and the state of New York. The falls were formed by the Wisconsin glaciation, which occurred about 10,000 years ago. During this period, a massive ice sheet covered much of North America, including the area where the Niagara Falls are now located. As the ice sheet began to melt, it carved out a deep gorge in the bedrock. When the ice sheet finally retreated, the Niagara River was formed, and the falls began to flow over the edge of the gorge.

The Niagara Falls are located at a unique point in the Niagara River, where the river makes a sharp turn. This turn is caused by the presence of a resistant layer of rock, known as the Lockport Dolomite. The Lockport Dolomite is more resistant to erosion than the surrounding rocks, so it has formed a natural dam that holds back the water of the Niagara River. As the water flows over the dam, it creates the Niagara Falls.

The Niagara Falls are a truly unique natural wonder, and they are a popular tourist destination for people from all over the world. The falls are a UNESCO World Heritage Site, and they are also one of the Seven Natural Wonders of the World.