At the Earth's Core

First published in All-Story Weekly during April 1914. First collected in book form by A.C. McClurg in 1922.

Foreseeing only a dreadful death when their scientific experiment went wrong, David Innes and his companion hurtled through endless subterranean miles until they broke through into a strange inner world at the earth's core.

Pellucidar! A land of no horizon and eternal day. A world of weird beauty and terrifying peril, where ferocious monsters unknown to man, and beasts from a prehistoric age long forgotten on earth, roam the forests and swamps, and where the hideous and savage Mahars keep a race of primitive men and women in abject slavery.