Grab your shovels and prepare to dig deep. When Ms. Frizzle's class forgets to do their geology homework, you know she is not going to just hand out worksheets. Instead, the Magic School Bus starts drilling straight down through the schoolyard, taking you on an unbelievable journey right into the center of the Earth. You will explore the rocky crust, travel deep into the scorching mantle, and discover exactly how different types of rocks and minerals are formed. Just when you think the pressure cannot get any higher, the bus gets blasted out through an erupting volcano. This explosive field trip perfectly mixes wild classroom humor with absolutely brilliant earth science facts. You will never look at a boring piece of gravel the same way again after experiencing this thrilling, molten adventure.