Online UFO hunter and self-titled space journalist Joe White, 45, claims to have stumbled upon the remnants of an ancient extraterrestrial inhabitant of Mars.
The bizarre claim surfaced online after Mr White spent hours trawling through photographs captured by NASA’s Mars Curiosity Rover.
The peculiar images of a rock formation oddly resembling the shape of a skull have no been shared online on Mr White’s YouTube channel ArtAlienTV.
In the video description, the UFO hunter speculates: “A giant bird, a giant’s skull and other mysterious structures and objects on Mars.
“Just take a look and see.
“Ignore the official dogma and use your own eyes.”
According to Mr White, the skull in question measures a staggering two feet, which would make its owner roughly 15 feet in height.
He then says in the video: “This looks like a giant skull with a jawbone here and maybe an eye socket here and another here.
“These to me look like teeth – can you see them? One, two, three, four, five, six. Possibly seven.
“And this looks like jawbone. So could this be another mud fossil, artefact or specimen should I say, encrusted into the mud and dried out?”
The video has been seen more than 8,000 since being uploaded the viewers were thrilled by the finding.
One YouTube comment, posted by Lee Roberts, reads: “Outstanding finds. The large skull has detail that’s indisputable.
“And its dead-on at you. Big thanks for this.”
Lauren Piantino wrote: “There is so much more out there, on Mars, to be discovered, and so much that NASA won’t be able to obfuscate.
“Moreover, they can no longer hide behind black and white images.”
George Mair also commented: “That skull could that be a carving on a large wooden pole or tree on its side?
“There is so much in this picture. Amazing stuff.”
However, there is a much simpler explanation for the images seen in the video and Mr White briefly touched upon it himself in the video.
The appearance of the skull in the Martian rock comes down to the psychological phenomenon known as Pareidolia.
Pareidolia is a little trick of the brain which causes people to see hopes and patterns where they do not exist.
UFO hunters will often falsely assume oddly shaped rocks or shadows on the moon or Mars are evidence of long-lost ancient aliens civilisations.
Mr White says in the video: “Now this also might be a case Pareidolia, or some holes in the rock.”
Cosmologist Carl Sagan addressed Pareidolia in 1995, arguing it was a survival tool developed by prehistoric humans to recognise foes from friends.
He also theorised: “As soon as the infant can see, it recognizes faces, and we now know that this skill is hardwired in our brains.
“Those infants who a million years ago were unable to recognise a face smiled back less, were less likely to win the hearts of their parents, and less likely to prosper.”