"Voyage au Centre de la Terre" by Jules Verne is an adventure novel written in 1864. When a German professor deciphers a cryptic runic message from a 16th-century alchemist, he discovers instructions for reaching the Earth's center through an Icelandic volcano. Together with his reluctant nephew and an unflappable guide, he embarks on an extraordinary underground expedition that challenges scientific theories of the time. This pioneering work blends geological knowledge, paleontology, and daring speculation into a subterranean journey of discovery.
Wikipedia page about this book: en.wikipedia.org/wiki/Journey_to_the_Center_of_the_Earth fr.wikipedia.org/wiki/Voyage_au_centre_de_la_Terre