Ancient Aliens: The Mars Monolith (Season 9) | 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!

Massive obelisks filled with quartz were erected across the ancient world. Ancient Astronaut Theorists suggest that these crystal towers could actually be antennae for communicating with extraterrestrials in this clip from Season 9, "The Monoliths". #AncientAliens
Subscribe for more from Ancient Aliens and other great HISTORY shows: http://histv.co/SubscribeHistoryYT

Find out more about the show and watch full episodes on our site:
http://po.st/AncientAliens

Check out exclusive HISTORY content:
History Newsletter: http://po.st/HistoryNewsletter
Website - http://po.st/HistoryWeb
Facebook - http://po.st/HistoryFacebook
Twitter - http://po.st/HistoryTwitter

HISTORY® is the leading destination for award-winning original series and specials that connect viewers with history in an informative, immersive, and entertaining manner across all platforms. The network’s all-original programming slate features a roster of hit series, premium documentaries, and scripted event programming.

Видео Ancient Aliens: The Mars Monolith (Season 9) | History канала HISTORY