A sneak peek inside Area 51: Declassified documents offer a rare glimpse into the most secretive site on Earth | Mail Online

Shadowy government departments, X Files, extraterrestrial pilots and futuristic crashed flying saucers - even Elvis Presley. They are all supposedly contained in the legendary and mystical Area 51 complex in the Nevada desert.

The intense secrecy surrounding the base - the U.S. government barely acknowledges its existence - has guaranteed its popularity in conspiracy theories and sci-fi films.

But now declassified information and pictures have given an rare and tantalising glimpse into the most famous top secret site on Earth.