Ancient Aliens: Pyramid Power Plants (Season 12) | Exclusive | History

Tune in to Alien Invasion Week on History starting Monday 9/30 through Friday 10/4 for new Ancient Aliens, plus the premiere of In Search Of, new UFO Specials and More! A look at how the Giza pyramids might have once functioned as a power plant in this digital exclusive from Ancient Aliens. #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: Find out more about the show and watch full episodes on our site: