Adventure, suspense, bravery, sea monsters, underground caverns, unbearable heat these are just a few of the wonderful subjects this book has to offer. The story begins when Professor Hardwigg finds a very old book with a piece of parchment in it. On the parchment was a form of writing in some secret code. When the Professor and his nephew, Harry, discovered its meaning they were both shocked to find out it was the instructions for a journey no man thought possible, the journey to the center of the earth! Almost immediately they went on the journey picking up a man by the name of Hans to be there guide. There were many hard times in this adventure. For example, the Professor thought that they would find water in an abundance only to find that there was none till Hans made the discovery by drilling through a wall. Who knows how they will ever survive. I would give this book a very strong four out of five stars because of its ability to keep you wondering what is next.