Against all the evidence provided by Nasa, alien conspiracists insist the Red Planet once held an ancient civilisation which was wiped out by a nuclear war.
“Marshenge” is the latest in a string of so-called discoveries of pyramid-like structures, “ancient statues” and other ruins that the ET researchers claim to have found in Nasa images of the Martian surface since they began being beamed back by space probes from the 1970s.
But they do not appear to have been as excited about any of them as the new “monolith structure”.
Scott C Waring of UFO Sightings Daily said: “This is something remarkable.
It’s two circles of rocks and one square in its centre.”
He even claimed to have seen similar structure in other Nasa images.
He said: “(It is) always a circle. Sometimes with big rocks, sometimes smaller, but always on small hills.”
YouTube channel Mister Enigma described the discovery – first revealed on Facebook by the page Journey to the Surface of the Mars as “insane.”
In a video about Marshenge on YouTube, the computer video narrator said: “A perfectly circular platform with a strange cluster of stones emerging from it.
“It looks eerily similar to what we have located here on Earth in Amesbury, Wiltshire, known as Stonehenge
See more photos at