The dimension-spanning, four-part "Fear on Four Worlds" storyline comes to a thunderous conclusion in the prehistoric world where it all began- The Land That Time Forgot! Edgar Rice Burroughs' greatest sci-fi worlds of adventure are all joined into one universe as Abby Tyler and Ethan Bradley battle their way back to their adopted home, the lost island of Caspak! But hot on their heels and out for blood are the voracious, flesh-eating, dinosaur-riding Horibs, the hideous lizard-men from Pellucidar, at the Earth's core! This issue comes with three covers - Main Cover by Mike Wolfer, Timeless & B&W Limited Edition Covers by Cyrus Mesarcia, and a Blank Sketch Edition.