Ancient Aliens · Season 13, Episode 10
Ancient Aliens Season 13 Episode 10: The Sentinels
About Ancient Aliens: Ancient Aliens explores the controversial theory that extraterrestrials have visited Earth for millions of years. From the age of the dinosaurs to ancient Egypt, from early cave drawings to continued mass sightings in th
More from Season 13
Season 13, Episode 1: The UFO Conspiracy Season 13, Episode 2: Da Vinci's Forbidden Codes Season 13, Episode 3: The Alien Protocols Season 13, Episode 4: Earth's Black Holes Season 13, Episode 5: The Desert Codes Season 13, Episode 6: Area 52 Season 13, Episode 7: Earth Station Egypt Season 13, Episode 8: Island of the Giants Season 13, Episode 9: The Taken Season 13, Episode 11: Russia Declassified Season 13, Episode 12: They Came from the Sky Season 13, Episode 13: The Artificial Human Season 13, Episode 14: The Alien Phenomenon Season 13, Episode 15: Return to Mars