Innes returns to the inner world in the second novel, Pellucidar. With the aid of the resources he brings the human revolt succeeds. In the course of the two books Innes wins the love of the cave-woman Dian the Beautiful, defeating rival suitors Jubal the Ugly One and Hooja the Sly One. Finally Innes and Perry succeed in building a confederacy of human tribes into an "Empire of Pellucidar" that wipes out the Mahar cities and establishes a new human civilization in their place.
