A German scientist discovers an ancient runic message, which when translated proves to be a map to the center of a hollow Earth! The professor and his nephew then embark on a dangerous adventure down an Icelandic volcano to explore an unknown world in the interior of the Earth.
Fiction & literature
Rate this audiobook
Tell us what you think.
Listening information
Smartphones and tablets
Install the Google Play Books app for Android and iPad/iPhone. It syncs automatically with your account and allows you to read online or offline wherever you are.
Laptops and computers
You can read books purchased on Google Play using your computer's web browser.