Ancient astronaut theorists ruminate on whether ancient civilizations built their massive structures using alien technology in this scene from Season 12, Episode 8, "The Alien Frequency". #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: ...

Experts analyze the Vittala Temple's unique pillars, which, when struck, produce amazing soundscapes and scales and question why the temple was built this way in this clip from Season 12, Episode 8, "The Alien Frequency". Subscribe for more from Ancient Aliens and other great HISTORY shows: ...

Experts talk about Pythagoras' influence on western music through his revolutionary analytics of the math of sound in this clip from Season 12, Episode 8, "The Alien Frequency". #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: http://histv.co/SubscribeHistoryYT ...