Mahars of Pellucidar (Edgar Rice Burroughs Universe)

The groundbreaking Edgar Rice Burroughs Universe series continues with a novel of thrilling adventure by John Eric Holmes!
When scientist Chris West saw the video-screen image of a beautiful woman about to suffer a gruesome death in an unknown land, he didn't hesitate to race to her aid by means of an experimental matter transmitter. Plunged headlong into a world of savage men and prehistoric beasts at the Earth's core, the young ex-Marine would soon be fighting for his own life as a captive of the Mahars, cruel reptilian rulers of the inner world of Pellucidar.
Includes the bonus classic novelette, "Tarzan and the Land That Time Forgot" by Joe R. Lansdale!
While returning from a trip to the Earth's core, the O-220 dirigible is blown off course by a violent tempest that plunges it into the frigid ocean off the coast of primeval Caspak. Now Tarzan, along with Captain Zuppner and a Pellucidarian woman named Zamona, must battle for survival amid the mysteries and dangers of the Land That Time Forgot!

John Eric Holmes (1930-2010) was the first writer after Edgar Rice Burroughs to pen an authorized novel set in Pellucidar, the world at the Earth's core. He was also the author of the Buck Rogers novel Mordred as well as several short stories. He is perhaps best known for having written the popular 1977 Dungeons & Dragons Basic Set (also known among D&D players as the "Holmes Basic Set"), which introduced an entire generation to the world of fantasy tabletop roleplaying games. In 1993, he was honored with the Lifetime Achievement Award from the Edgar Rice Burroughs Chain of Friendship (ECOF).