The History Channel continues its popular series on on extraterrestrials, alien theorists and ancient civilizations with season two of Ancient Aliens.

The following video playlist constitutes program nine, entitled Alien Devastations  and runs for 45 minutes. It examines whether the great deluges, cosmic battles and geological cataclysms were the direct results of natural forces or a highly advanced civilization of ancient aliens.

"Examines 75 million years of the most credible alien evidence here on Earth, from the age of the dinosaurs, to ancient Egypt, to the skies over the western desert in the present day United States. This new season will include sightings and phenomena from ancient times all the way up to the present, exploring possible connections between overall UFO phenomena and information included in ancient texts and decoded from ancient artifacts." - History Channel.