
A restless professor of mineralogy bursts into his modest Hamburg home, his booming voice demanding his nephew’s immediate attention. Axel, a hesitant but curious young man, watches his uncle’s eccentric brilliance as the professor brandishes a strange, nut‑cracker‑shaped key and a weather‑worn notebook. The excitement builds when they uncover a cryptic passage hidden in an ancient Icelandic manuscript, hinting at a secret route that leads deep beneath the Earth’s surface.
Compelled by the promise of uncharted realms and untold scientific wonders, the duo prepares for an expedition that will test their resolve and ingenuity. Their preparations are filled with the professor’s characteristic fervor—packed with hammers, compasses, and vials of acid—while Axel grapples with both awe and doubt. Listeners are invited to join their early steps into a world where geology meets adventure, and the line between myth and discovery begins to blur.
Language
nl
Duration
~7 hours (436K characters)
Publisher of text edition
Project Gutenberg
Credits
Produced by Jeroen Hellingman and the Online Distributed Proofreading Team at https://www.pgdp.net/ for Project Gutenberg.
Release date
2003-12-01
Rights
Public domain in the USA.

1828–1905
A master of adventure fiction, he turned bold scientific ideas into stories of submarines, moon voyages, and journeys to the center of the Earth. His novels helped shape modern science fiction while keeping the sense of wonder and danger that still draws readers in.
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