This two-hour special traces the origins of Arthur Conan Doyle's The Lost World—the land of dinosaurs and ape men. Dramatizations of 19th century British expeditions combine with a modern-day trek. An exploration team will travel to the mist-shrouded ancient plateau of "Roraima" in Venezuela, encountering dangerous animals and native legends of flying reptiles and the Di-Dis (apemen) said to live there. Scaling the 5000-foot plateau, the team of cave-biologists and scientist/adventurers will enter a recently discovered cave system to look for signs of new life forms.