Footage of an 'alien fortress' on the moon has been dug up by a UFO expert who claims the images are evidence that other life is out there.

The pictures, taken from the Lunar Orbiter satellite, appear to show two large structures on the moon's surface.

These rectangular objects are buildings, one man claims, and are 'undeniable proof' of extra terrestrials.

The claims come from UFO hunters secureteam10 which reports 'alien activity' on its YouTube channel.

They debunk the theory that these objects are a trick of the camera and reveal these same 'structures' can be seen from footage taken during the Apollo 16 mission in 1972.

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