In 1947, a mysterious craft reportedly hurtled into the Roswell site in New Mexico, US – sending alien hunters into a frenzy.
The military insisted it was merely a weather balloon, but conspiracists are convinced one or more aliens were recovered.
Now one of them has supposedly unearthed a video that hints at extraterrestrial technology.
In it, a mysterious individual holds up metal plates that appear to show handprints with six fingers.