When you go skiing, you need to go down a hill. But not all hills are the same. Some hills have what we call a "fall line". This is the path that water would take if it flowed down the hill. When the snow covers the hill, it also follows the fall line.
So, what does this mean for skiing? It means that the fall line is the steepest part of the hill, and it's where you can pick up the most speed. When you ski down the fall line, you'll be going fast and you'll feel the wind in your face.
However, skiing down the fall line can be dangerous if you're not careful. Because it's so steep, it's easy to lose control and go too fast. That's why it's important to stay in control and be aware of your surroundings.
Overall, the fall line is an important part of skiing because it affects the speed and difficulty of your run. As you get better at skiing, you'll learn how to navigate the fall line and use it to your advantage.