UFO seekers are claiming the ruins can be seen hidden among rocky Martian mountains.
The photos, taken by NASA’s Curiosity Rover, have sparked fresh claims there may have once been intelligent life on the planet.
An alien conspiracy theorist revealed the suggestion in a blog post titled “Alien City Ruins on Mars? In Official NASA Images”.
They wrote: “In the last couple of years, the number of images showing alleged structures on the surface of the red planet have quadrupled.
“In fact, nearly every single image beamed back by NASA’s rovers on Mars seems to show at least one particular ‘object’ which appears to be artificially carved or created.
“While most of these objects are the result of pareidolia, other findings cannot be dismissed so easily.”
Pareidolia is when the brain tricks the eyes into seeing familiar objects such as faces or animals in textures, patterns or clouds.
The latest discovery is likely to be just another example of this, but that has not stopped alien buffs getting excited.
The post added: “In fact, scientists believe it’s VERY possible that intelligent life may have developed on the surface of Mars in the distant past.”
UFO hunter Scott C Waring, of the UFO Daily Sightings Website, claims similar images from NASA’s rover reveal buildings with windows.
He sensationally claimed the space agency is trying to cover up the discovery of these structures to prevent the public from finding out.
Suggesting NASA has something to hide, he said: “NASA had to release the photo to the public to say ‘we didn’t hide it, we released it to the public’.
“This way they won’t get caught for hiding evidence later. But we know that trick, and we are onto them.”
Daily Express :: Weird Feed