 Their movies were narrated by such distinguished actors as Orson Welles, David Niven, James Mason and Ian Holm.Their 1979 "Survival" documentary, "Mysterious Castles of Clay", was nominated for an Academy Award for Best Documentary.The Roots introduced Dian Fossey to the gorillas she would later die trying to save, took Jacqueline Kennedy Onassis over Kenya in their balloon, and covered much of Africa in their famous single-engine Cessna, their amphibious car, and their balloon, at one time equipped with a raft for water landings."