Professor Von Hardwigg believes there are volcanic tubes going toward the center of the Earth. He, his nephew Axel, and their guide Hans encounter many adventures, including prehistoric animals and natural hazards, eventually coming to the surface again in southern Italy.
Professor Challenger leads an expedition to an isolated plateau in the Amazon jungles where dinosaurs still reign. Virtually all the "lost world" adventures in book and film take their inspiration from this novel. In the public domain.
Allen Cade followed his faith, and tried to save his marriage, but his wife had other ideas, and wanted out. If he wanted a till death we do part marriage, she would give it to him. When her attempt on his life failed, his daughter testified that it was an accident, but urged her dad to give up trying to reconcile, and go somewhere else to start over. This is the story of a new start.