A huge mushroom cloud was recently filmed at Area 51 by a couple of passers by who spotted the large plume of smoke from the mysterious top-secret US military airbase – thought to be the home of UFOs and aliens.
Jimmy and Jackie posted a video to YouTube, which shows a plume of dark smoke rise from the UFO base as they drive towards it.
When they reached the main gate, which has warning signs not to cross, there was another group of four people watching the smoke who were being monitored by a white security jeep parked up on a hill.
Some conspiracy theorists claim the authorities conceal evidence of aliens visiting Earth from the public within the base.
It has been claimed a “flying saucer complete with aliens” said to have crashed near Roswell, New Mexico, in 1947 was taken and stored there for examination.
Some suggest they try to reverse engineer alien space craft there, but more grounded researchers claim it is just a testing site for new aircraft technologies.
British UFO expert Mike Oram even claims he was abducted by aliens in league with military personal during a visit to Area 51.
The base is so secretive that Democrat presidential frontrunner Hillary Clinton has vowed to find out what goes on there if she makes it into the White House.
Other conspiracy theorists claim a controversial High Frequency Active Auroral Research Program (HAARP) may have been restarted at Area 51.
HAARP was a weather ion research programme jointly funded by the US Air Force, US Navy, the Defense Advanced Research Projects Agency (DARPA) and universities.
It began in 1993 and at the height of conspiracies, some theorists claimed it could change weather patterns, cause earthquakes, droughts and storms.
Actually, based on a sub-arctic facility, an Air Force-owned site near Gakona, Alaska, HAARP’s purpose was to analyse the ionosphere and investigate the potential for developing ionospheric enhancement technology for radio communications and surveillance.
It temporarily ceased in May 2013 and was officially closed a year later.
As the couple drove away from the base they were caught by a sudden downpour of rain.
Jimmy said: “We’ve got a big cloud coming over us. It is probably radioactive rain from whatever they are burning over there.”
Their trip took place in 2012, but the footage is making waves after being posted on paranormal YouTube channel FindingUFO.
Online posters speculated over what could have caused the fire.
One appeared to believe it could be connected to Haarp.
Translated from French, they posted: “Make Rain! Carbon dioxide and silver iodide. Geo-engineering Desert!
“The aliens are a diversion. A type of scientific research?”
But Richard Mather posted: “Looks like there burning their toxic waste again. Well the president signed an executive order that they can do what they like.”
Jimmy said he asked at a cafe in the nearest town Rachel, and staff said it was probably a “brush fire.”
There are reports that on April 4 1999 there was a huge fire in the mountains by Area 51, that was officially said to have been caused by a lightening strike.
But researchers claim it was a crash involving two B-52 Bombers that took off from Area 51.
A report of the incident, which includes pictures said to have been taken of the fire on www.dreamlandresort.com said: “The first official story said that it was caused by lightning strike. Later, when it became obvious that this was impossible, the story changed. According to the new story, the fire was caused by an accident involving two B-52 bombers that took off from Area 51.
“One lost two attached external fuel tanks shortly after takeoff, which exploded on impact with the ground.
“This version may or may not be true.
“Or it is just another cover story for an even more secret test mission that crashed that night into the mountains just north of Area 51.
“I did not see any fire fighting trucks or planes, or any other attempts to put out the blaze. In fact, except for a couple of security helicopters there were absolutely no planes anywhere around to be seen that night.”
The author said they made a freedom of information request about the incident but were given no details.