This audiobook is narrated by a digital voice.

David Innes and his friend, inventor Abner Perry, embark on a daring journey in their newly built "iron mole," a powerful digging machine. Their test run goes awry, plunging them deeper than intended. Instead of molten rock, they emerge into a fantastical world called Pellucidar, a hollow Earth illuminated by an eternal sun. In this land, dinosaurs roam alongside primitive humans, and intelligent, telepathic reptiles called Mahars rule with an iron fist. David and Abner find themselves captured and enslaved, forced to navigate this strange world filled with adventure, danger, and potential romance.