Chapter 1: The profesor find a note and translates it. The note says how to get the center of the earth. He and Axel go to the center of the earth, but before, Axel fins Gräuben and tells her the trip. Chapter 2:Axel and his uncle are in Iceland and they meet Hans, their guide, and the next day they go to the Snafel Volcano. Chapter 3: The three men climb down into the crater. When they are at the bottom, they wait one night and the sun illuminates the correct shaft. Chapter 4: They go down the shaft and they see a tunnel. They stay two weeks in the long tunnel and run out the monster. They find hot water using a pickaxe. Axel explores ahead and gets lots and trips. Chapter 5: Axel fall into a hole but Hans and professor find him. They find an underground world with a sea, bones of dinosaurs and huge mushrooms. They make a raft, they set sail and they see monsters fighting into the see. Chapter 6: The monsters fight and one dies. They see a geyser. There is a storm and the raft trips over. Chapter 7: Hans rescues the professor and Axel, the suplites and pulls the raft a shore. Axel wants to go back but her uncle wants to continue Chapter 8: The three men find a strange man and some elephants A.S's knife and a cave with A.S's initials Chapter 9: The three men explore the cave but there's a huge rock and it is blocking the way but the professor have an idea.: to use gun powder to blow that rock. They leave the cave and Hans prepares the gun powder. But the explosion has caused an earth quake and the volcano explodes. Chapter 10: The men run out from the volcano an later they find a city: Stromboli. And they return home.