Pellucidar

In 1915, Edgar Rice Burroughs wrote a fantasy series of novel, Pellucidar. In his imagination, Burroughs created a fictional imaginary world, named Pellucidar. It is fictional 'hollow earth' invented by the author, reachable through polar tunnel. Edgar has made the story of inner world, inner sun, primitive civilization etc. realistic and believable. Pellucidar has primitive culture and inhabit...