'Another strange thing about this is that in another photo taken a few moments later in the same area, there are what looks like two faces carved on the side of the cliff facing the area of the sarcophagus,' explained Mister Enigma

'What would it take to get Nasa to turn the rover around and examine the contents of this box?'

Although Nasa hasn't commenting on this specific question, the agency has made statements regarding these types of requests.

'As you can probably tell, it is a natural rock at the disrupted rim of a small crater, not a sculpture made by some ancient culture,' Nasa spokesman Guy Webster told FoxNews.com in an email regarding a sighting of face on Mars last year.

'But it's great that people are using their imaginations and enjoying the full public access to every image taken by any Mars rover.'