Perhaps the most bizarre conspiracy theory about Area 51 was written by Annie Jacobsen in 2011. She thinks that the site was the center of a US cover-up that went into motion following the crashing of a UFO at Roswell in 1947, and she claims the ‘UFO’ was a Soviet craft piloted by genetically engineered children to make people think it was an alien craft in order to spread fear.

In this theory, Area 51 was used as the storage site for the ‘Soviet’ ship and the remains of the crew. She also claims that the genetic modification of the children was carried out by Nazi scientist Josef Mengele, who is infamous for his concentration camp experiments during WWII.