Martian Archaeology, which releases its findings in YouTube videos, has released a film showing 13 separate views of what it has called "The Pharaoh of Mars" suggesting an ancient alien civilisation could once have thrived on the planet.

The video shows a number of different views of a rock that appears to have a face at the front.

Martian Archaeology claims it resembles the ancient carvings in Egypt-like the Sphinx.

The video description states: "Thirteen views taken on different days of a Martian pyramid, as we see on Earth in Egypt, we see on Mars at Aeolis Mons, The walled city of an ancient civilisation."

The images were taken by the NASA Curiosity rover, which is a four-wheel drive droid which is currently exploring the surface of the Red Planet and beaming the images back to the space agency.