in 1864, Jules Verne wrote a book (science fictiion) called "A Journey to the Center of the Earth" where the Earth was hollow. In the story, the charactors discovered an entrance to the interior and once there, could walk around on the inside surface (perhaps like ants could walk on the inside of a basketball). Many people were convinced that the Earth could be hollow, and some do today.From a scientific point of view, this story has not aged quite as well as other Verne stories, since most of his ideas about the interior of the Earth have since been proven incorrect. .