Plot synopsis: There are six places on Earth believed to be actual entrances into Hell. They include a volcano in Iceland, a cave in the jungles of Central America, and a lake of fire in Africa. According to ancient myth and Christian legend, each is a passage to a terrifying underworld for the damned. Even today, some believe they are still portals. Eerily, they share striking similarities. Visit these six locations, and discover how the concept of Hell emerged in history and why it still evokes fear today.