Axel and his uncle set off on their journey. Three weeks later, the men arrive in Reykjavik in Iceland. Hello, Mr Fridrikssen. You got my letter then? Yes, Professor. Welcome to Iceland! Mr Fridrikssen introduces them to their guide. This is Hans - your guide. Hello, Hans! Pleased to meet you. We must rest, Axel. Tomorrow we leave for the Snaefell Volcano. Early the next morning, they begin their journey. How exciting, Axel. We're off to the centre of the Earth! After a week of travelling,... Look! That's it! The Snaefell Volcano. The men slowly climb to the top of the volcano. At the top, Axel is nervous. What if the volcano erupts? Don't worry, Axel. It hasn't erupted in hundreds of years. The crater of the volcano is deep and dark. I'm afraid of heights! The men begin to climb down... How am I ever going to make it to the bottom? Don't look down, Axel.