History's Greatest Mysteries S7E1 · Area 51

History's Greatest Mysteries

Season 7 · Episode 1 · Area 51

Hidden in the Nevada desert, a top-secret military base remains one of the most heavily restricted sites in the United States; since the 1950s, speculation has swirled about its true purpose-ranging from hiding experimental aircraft and even alien technology; Area 51 keeps its mysteries so closely guarded that not even the president is fully briefed; what is the government really hiding there?