Once again, Ms. Frizzle gets her class right in the thick of things-this time, they're right in the thick ooze of an underwater volcano's magma chamber As Arnold and Carlos watch from a raft above, the Magic School Bus erupts with the magma and lava, and lands atop a brand-new island Full color. | The Magic School Bus Blows Its Top by Joanna Herman Cole, Reinforced Library Binding | Indigo Chapters