"At the Earth's Core" by Edgar Rice Burroughs follows wealthy adventurer David Innes and inventor Abner Perry, whose experimental drilling machine carries them five hundred miles beneath the Earth's surface. They discover Pellucidar, a prehistoric world at the planet's core, illuminated by an inner sun and inhabited by dinosaurs, primitive tribes, and the Mahars—telepathic reptilian beings who rule and enslave humanity. David falls in love with Dian the Beautiful and fights to free her people from Mahar tyranny, embarking on a thrilling journey of survival, romance, and rebellion. This 1914 classic pioneered the popular "hollow Earth" adventure genre.
