Pellucidar

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.

Pellucidar is lit by a miniature Sun suspended at the center of the hollow sphere, so it is perpetually overhead giving a time sensation of eternal noon wherever one is in Pellucidar.

All or most of the human inhabitants of Pellucidar share a common world-wide language.

Also, several characters from the outer world who have lived a long time in Pellucidar seem to age slowly and exhibit considerable longevity.

Among the known races in Pellucidar are: * The Ape Men - A race of black ape -like creatures with prehensile tails; arboreal in nature.

During the initial explorations of Lechuguilla Cave in the late 1980s, a chamber was named "Pellucidar" in honor of these stories.

In a notable crossover event between Burroughs' series, there is a Tarzan story in which the Ape Man travels into Pellucidar.

In James P. Blaylock 's The Digging Leviathan (1984), a pair of rival scientific teams compete to reach Pellucidar; the story concludes before the goal is attained.

In John Crowley 's Little, Big (1981), a drug named Pellucidar is mentioned and appears to have an exhilarating and even aphrodisiac effect.

In the show, however, Pellucidar is merely described as being a region below Africa where dinosaurs still live.

Pellucidar has appeared in one movie adaptation.

Pellucidar is accessible to the surface world via a polar opening allowing passage between the inner and outer worlds Burroughs, Edgar Rice (1930).

Races Pellucidar also harbors enclaves of various non-human or semi-human races.

The 1996 pilot to the TV series Tarzan: The Epic Adventures also features Pellucidar, as well as the character Jana from the book Tarzan at the Earth's Core.

The events of the series suggest that time is elastic, passing at different rates in different areas of Pellucidar and varying even in single locales.

The Hollow World of the fictional Dungeons and Dragons setting of Mystara shares many concepts taken from Pellucidar, such as the polar opening(s), the central sun, the floating moon(s) and the primitive cultures living in the internal surface.

Though Burrough's novels suggest that the Mahar realm is limited to one relatively small area of the inner world, John Eric Holmes ' authorized sequel Mahars of Pellucidar indicates there are other areas of Mahar domination.

Using a mechanical drill, his heroes discover a prehistoric world, called Pellucidar, 500 miles below the surface, that is lit by an inner sun.

While the Mahars are the dominant species in the Pellucidar novels, they seem confined to their handful of cities.