Pellucidar

Pellucidar, published in 1915, is the sequel to At the Earth’s Core, continuing the adventures of David Innes in the fantastical inner world of Pellucidar. This subterranean realm, with its prehistoric creatures and primitive societies, becomes the backdrop for battles, rescues, and exploration. Burroughs blends pulp adventure with imaginative world-building, delivering fast-paced action and heroic romance. As part of the Hollow Earth subgenre, the novel reflects early 20th-century fascination with lost worlds and scientific discovery.