Ancient Aliens: Secret Extraterrestrial Enclaves Revealed (Season 20)

Could there really be hidden extraterrestrial bases at these landmarks? See more in this compilation from Season 20, Episode 3, "The Top Ten Hidden Alien Bases."

#AncientAliens

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"Ancient Aliens" explores the controversial theory that extraterrestrials have visited Earth for millions of years.

[gloria_o]

Am i the only one who can hear heckle fish from the why files constantly saying “Mount Motherf***in Hayess”😂😂

[wyldvigilante]

This is the best guy to host this show.

[markworthington]

We have no idea what has actually been happening for thousands and thousands of years

[Tamde]

Don't forget that Pat Price, considered one of the best remote viewers ever, saw aliens working deep inside Mt. Hayes. Kinda surprised it was never mentioned here.

[alimarie]

If they’re observing our Earth, they must be thinking “ it’s the insane asylum of the galaxy 🤣🤣🤣🤣🤣🤣

[bribri]

My 2 cents on the black pyramid:

1. Could be a power plant.
2. Could be used to beam souls off this planet into another planet or universe.
3. Could be total BS and not even be there!

[drdarrylschroeder]

Hello - They have caves in the Tibetan mountains where they visit when checking up on us. They contain ships and their paraphernalia preserved in the fourth dimension which makes everything incorruptible since around four million years ago.

[frankm.]

“I’ve seen things like that all the time.” Seems like a reliable source.

[judyrao]

Yes I believe that sub oceanic and subterranean beings have been here for millennia. The source of their origins is obscure. Their bases under oceans or mountains are convenient for them to study us surface dwellers anytime they want. They have superior technology because they have not been subject to any mass extinction event.

[dannyboers]

We are not alone out here 👽 greetings from the Netherlands

[anediareese]

Thank you History Channel for covering this. Great episode.
Thank you

[dolphinsfan]

Mount Mother f***ing Hayes, courtesy OF Hecklefish & the WHY FILES

[Dream_Demon]

I like to see uploads from more recent seasons of the show

[bestestindaworld]

They have many bases and on the moon too.

[Lone-Wolf]

Soon very soon aliens will show themselves. Their technology can help us so so so so much. Being able to travel to other planets will be amazing.

[Phlegethon]

I always thought the guy with the crazy hair was the alien

[finley.h]

They don‘t seem to be affected by earthly matter, as evidenced by the movement of objects in the UAP phenomena recently released by the military. If their base is inside or under those mountains, it is more likely that it is not a physical cavity but in another dimension that we cannot perceive. 😔

[nieron]

I believe the stories from the Native Americans. They don't have an agenda, and they've always lived in harmony with nature.

[bbvanztv]

This is the true host of history i love him ❤

[EngineeringAdjacent]

How can someone take this seriously? Apollo 13 never crashed anything into the moon! Even if it was part of the mission plan, that one didn’t go so well.