Geology birthday cake

I have the coolest nephew on the planet - so it only makes sense that I would make him a cake that looks like our planet, right? My nephew is a super incredible genius child. I am not just saying that. He is 5 years old and does 3rd grade math...for fun. He is truly a unique child, and I love him. So was I surprised when he wanted a geology cake for his birthday? Not really. I had a lot of fun making it too.