Imagine you are playing with Play-Doh and you have one big ball and some smaller balls. You decide to smash the smaller balls onto the big ball, and as you do, you notice that they make little bumps on the surface of the big ball.
Now imagine you are looking at a picture of the moon. On the surface of the moon, there are also craters that are made by rocks hitting it. But sometimes, a smaller rock hits the moon and forms a crater on top of a bigger rock. This creates a little hill or bump, called a pedestal, around the smaller crater.
So, a pedestal crater is just like the bumps you made on your Play-Doh ball, but instead it’s a crater on the moon that makes a little hill.