At the Earth's Core (version 2)

When mining heir David Innes and his inventor Abner Perry test the experimental "iron mole" excavating machine, they expect a routine trial. Instead, the contraption plunges five hundred miles through the Earth's crust and emerges into Pellucidar, a sun-lit world suspended at the planet's core where the laws of physics twist into something ancient and strange. Here,inosaurs roam forests of giant ferns, flying reptiles called Mahars rule over stone-age human tribes with iron will and telepathic cruelty, and Innes must fight for survival among cavemen, slavers, and the last woman he ever expected to love. What begins as a trapped man's desperate bid to return home becomes an epic odyssey through a world where time itself seems frozen in prehistoric amber, and where one man might just reshape the fate of an entire civilization. Burroughs wrote with the kinetic energy of a fever dream, delivering sword fights, tarzan-esque romance, and enough monstrous reptiles to fill a museum of nightmares.