What are the Three Layers of the Earth?

The layers of the Earth are (from outside to inside) the crust, the mantle and the core. The crust is very thin and floats on the mantle. Mantle starts about 19 miles under the crust, so it would take a very long time for you to dig down to it! It is 1,800 miles thick. The core is so hot everything is molten.You can find more information here: