The Hollow Earth: At the Earth's Core and Pellucidar - Softcover

Readers can now enjoy two action-packed, adventure-filled fantasies from Tarzan creator Edgar Rice Burroughs--At the Earth's Core and Pellucidar--in this one volume! While working in the Sahara, David Innes--heir to a mining fortune--makes a shocking discovery: an unknown world exists below ground, at the Earth's core. Once trapped in this primeval land known as Pellucidar, Innes must battle an array of terrifying prehistoric creatures and primitive tribes if he is ever to return to the Earth's surface.

This new edition features a map of Burroughs' imaginary land plus a glossary of terminology.
 

Edgar Rice Burroughs (1875-1950) was one of the twentieth century's most popular and prolific writers of science-fiction and fantasy/adventure tales, publishing nearly 70 novels and numerous short stories during his career. Well-known for his 11-book John Carter of Mars series, Burroughs wrote 23 novels in the internationally successful Tarzan series and created numerous other series set everywhere from a lost island plagued by dinosaurs to a mysterious world at the earth's core. Authors from Ray Bradbury to Michael Crichton have cited Burroughs as a seminal influence on their work. 

Paul Di Filippo's first story appeared in 1977, and he has published nearly 200 since.  A native Rhode Islander, he lives in Lovecraft's Providence with his mate of thirty-five years, Deborah Newton, a calico cat named Penny Century, and a chocolate-colored cocker spaniel named,with minimal effort and imagination, Brownie.