The Palmer Divide is kind of like a big hill that goes through Colorado. It's not like a regular hill that goes up and down. Instead, it's a ridge that goes from north to south. The ridge is really tall in the middle, but it slopes down on both sides.
The top of the Palmer Divide is really important because it affects the weather in Colorado. When the wind blows from the west, it has to go up and over the Palmer Divide. The air gets cooler and it starts to rain or snow. Sometimes it can even create big thunderstorms!
The Palmer Divide is also home to lots of animals. Birds fly over it during their migrations and wild animals like deer and elk live in the forests around it. People like to visit the area too, because it has great views and hiking trails.
So basically, the Palmer Divide is a big tall ridge in Colorado that affects the weather and is home to lots of animals.