This is a volcano, its basically a tunnel into the mantle, from here well be able to learn about out planets interior.
Not only are we near a tunnel but we are also in the beginning of our journey, we are on the crust. This is the surface, all humans and animals live on the crust, and its nice and cool up here.
This is the mantle. The second layer from the top. It is much hotter down here. Its made of magma, a liquid texture. It is also the biggest layer as you can see on the map. This layer also has rock fragments, and volcanoes link right down to here.
This is the outer core, the third destination. This is the last liquid layer. Its much hotter than the mantle down here, and the pressure is immense. From here on, scientists can only guess using computers and physics.
This is the inner core. This is also solid. Many people belive the inner core is made of metal, and is very heavy, but it is actually very light and is made of sulpher. It stinks down here!