The "UFO" in the background and (inset) in close up

A video entitled "UFO at Mount Hadley" has been posted to YouTube by paranormal channel Streetcap 1, centred around the 1971 picture.

It shows, in the background of the official NASA image available to view online, an odd shape in the background which UFO hunters have called craft-like.

Scott C Waring, editor of UFO Sightings Daily, said: "This UFO was found in an old Apollo 15 image during their moon walk.