The 'monolith', was snapped from 165miles away using a special high resolution camera on board the Mars Reconnaissance Orbiter.
After being published on the website Lunar Explorer Italia, it set tongues wagging with space buffs questioning whether there was once life on the Red Planet.
The image seems to resemble the black monolith that appears during key moments of man's evolution in the Stanley Kubrick film 2001: A Space Odyssey.
'Is it possible that there used to be an ancient civilization on Mars?' former Montreal radio presenter David Tyler asked on his blog.
'Is it possible that NASA already knows the answer? Could this be the final straw for disclosure?'