Due to warfare, instability, and inaccessibility--there are specific regions of the world that are off-limits to exploration. See more in Season 10, Episode 10, "The Forbidden Zones." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all of your favorite shows ...

Could gold be the ultimate link between humans and aliens? See more in this scene from Season 3, Episode 4, "Aliens and Temples of Gold." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all of your favorite shows on The HISTORY Channel website at ...

Do alien portals exist? See more in this compilation from Ancient Aliens. Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all of your favorite shows on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more from Ancient ...

Throughout the world, ancient rites and rituals are believed to connect humans to another dimension. But just who--or what--are we communicating with? See more in this scene from Season 3, Episode 5, "Aliens and Mysterious Rituals." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, ...

Could today's rituals, such as festivals, coronations and funerals, be based on early man's attempts to emulate ancient alien visitors? See more in this scene from Season 3, Episode 5, "Aliens and Mysterious Rituals." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to ...

What is the truth behind this mysterious lake monster? See more in this scene from Season 3, Episode 8. Watch all your favorite episodes of The Proof Is Out There, and stay up to date on all of your favorite The HISTORY Channel shows at http://history.com/schedule. #TheProofIsOutThere ...

Did you know that there's a network of private citizens that investigate UFOs? See more in this scene from Season 19, Episode 5, "The MUFON Files." Watch all new episodes of Ancient Aliens, Fridays, at 9/8c, and next day on The HISTORY Channel website at http://history.com/schedule. ...

Top 10 UFO Sightings In History The Government Is Still Trying To Hide From Us Subscribe To Most Amazing Top 10: http://bit.ly/2Ibyk6i Most Recent Videos: https://www.youtube.com/watch?v=Pj2rni0BfKo&list=UUBINYCmwE29fBXCpUI8DgTA UFOs have been seen by millions of people worldwide, and yet the ...

Check out these extra creepy creatures, in this The Proof Is Out There compilation. 0:00 - Petrified Mystery Animal 4:34 - Grotesque Alyoshenka 9:18 - Inexplicable Brazilian Giant Ground Sloths 14:16 - Creepy Worm Clusters #TheProofIsOutThere Subscribe for more from The Proof Is Out There ...

Could these artifacts really have extraterrestrial origins? See more in this compilation from Ancient Aliens! 00:00 - Impossible Artifacts Possess an Extraterrestrial Connection 02:12 - Mysterious 2,000-Year-Old Skull Linked to Alien Life 07:40 - Ancient Artifacts Extraterrestrial Origins ...

Ancient cultures around the world tell stories of strange objects witnessed flying in the sky. But are these tales fiction, or might people living thousands of years ago actually have seen extraterrestrial crafts descending from the heavens? Watch all new episodes of Ancient Aliens, Fridays, ...

Is this bizarre-looking shark the result of radiation effects? See more in this scene from Season 1, Episode 5, "Sea Creatures." Love watching The Proof Is Out There: Bermuda Triangle Edition? Stay up to date on all of your favorite The HISTORY Channel shows at history.com/schedule. ...