The video released by conspiracy theory YouTube channel ikillMasons4fun, appears to show the wreckage of what is alleged to be from a UFO recovered from the notorious Roswell crash site in 1947, according to reports.
Roswell has been at the heart of the UFO scene since in July 1947 the military sensationally announced in a press release it had found the remains of a crashed flying saucer in the desert nearby.
But the following day it retracted the statement, saying it was in fact a damaged US Air Force air balloon.
Witnesses later came forward to say there had been alien bodies within the "crashed craft", which along with the wreckage were then taken to a mysterious top-secret military base.
There have been many theories about what actually happened, but an official government probe into what happened concluded it was a secret spy balloon being tested.
It remains one of the world's biggest conspiracy theories.
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