Ridge line

Imagine you're playing with a piece of paper and you fold it in half to create a crease. If you look at the crease from the side, you'll notice that it creates a little bump or ridge.

A ridge line in nature is similar to the crease in the paper. It's a high point that runs along the top of a mountain or hill, and it creates a bump or ridge that you can see if you're looking at it from the side.

Sometimes people like to hike along ridge lines because they offer great views on both sides. However, it can also be dangerous because the ridge is often very narrow and steep, which means you have to be careful not to lose your footing and fall off.

Overall, a ridge line is just a high point that creates a bump or ridge along the top of a mountain or hill.