being a region below Africa where dinosaurs still live. None of the characteristics of it described in the novels are seen and the Mahars, prehistoric mammals, and stone age humans are not seen in this version of the inner world. In the episode "Tarzan and the Hidden World", Tarzan leads Professor Porter into Pellucidar so he can become famous before his rival, Professor Philander, who has also arrived in Africa. Professor Porter accidentally steals an egg from a T-rex and the dinosaur retaliates by chasing them. Philander's photographic proof of Pellucidar is ruined by a monkey who took photos with his camera. Pellucidar is mentioned again in "Tarzan and the Beast from Below". The episode revolves around some Velociraptors which escaped from Pellucidar and scare Terk. Pellucidar is revisited by Tarzan and is the central location of the Dark Horse Comics crossover Tarzan vs. Predator: At the Earth's Core, where Tarzan faces off against the alien Predators in Pellucidar. Pellucidar appears in the final episode of Tarzan and Jane along with King Kong. Influence A tribute story, "Maureen Birnbaum at the Earth's Core", appeared in George Alec Effinger's Maureen Birnbaum, Barbarian Swordsperson. Pellucidar was the major inspiration for Lin Carter's Zanthodon novels of the late 1970s and early 1980s, set in the vast cavern of Zanthodon beneath the Sahara desert. The Hollow Earth milieu of Skartaris in the Warlord series of comic books by Mike Grell, published from 1976 to 1989, is essentially a translation of Pellucidar into the graphic medium, with the admixture of magic and elements of the Atlantis myth. The hollow interior of Earth seen in the 2008 Asylum film Journey to the Center of the Earth bears some similarity to Pellucidar, although the film was intended as a film adaptation of a novel by Jules Verne. The Hollow World of the fictional Dungeons & Dragons setting of Mystara shares many concepts from Pellucidar, such as the polar openings, the central sun, the floating moons, and the primitive cultures living in the internal surface. In James Blaylock's The Digging Leviathan (1984), a pair of rival scientific teams compete to reach Pellucidar. However, the story concludes before their goal is attained. Blaylock's Zeuglodon revisits the Pellucidar theme, when a group of children attempt to rescue Giles Peach, one of the characters traveling to Pellucidar in The Digging Leviathan. In Robert A. Heinlein's Number of the Beast, the protagonists