Alien Cities Found Underwater?! | Ancient Aliens: Declassified (S2, E4) | Full Episode



Ancient underwater cities can be found around the globe, but could these aquatic worlds be the ruins of unknown civilizations–or even proof of extraterrestrial visitations? See more in Season 2, Episode 4, “Aliens Above and Below.”

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

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35 thoughts on “Alien Cities Found Underwater?! | Ancient Aliens: Declassified (S2, E4) | Full Episode”

  1. Hold on there, i thought you guys said it fell off from the sky??? why is it still questionable how it got to that family property??? you guys are just going back and forth back and forth….You guys should be investigating ''WHO STOLE THE SPHERE''?????? Start investigating who stole the Betz Family's sphere. It's supposed to be 3 SPHERES.

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  2. Ancient Aliens changed the way i think about our history and religion. Actually made me more religious. Changed the way i think about technology basically changed my life 🙂👍

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  3. My husband and I were so inspired by this show that we sacrificed four of our neighbors and ate our oldest son. We think we found proof of an ancient alien outpost beneath the waters of a local lake.

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  4. Perhaps they come as descendants of a highly intelligent beings that were living on the surface. And of these beings, the richest ones built many different underground bunkers 15,000 years ago to go live underground with their followers to survive a catastrophic wold event.

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  5. I like how they keep thinking Fire was the start of everything.. Yes. It is.. but not in the way they are attaining it to.. Dudes would have never made it through a cold night if you didn’t know how to start a fire.. 🤯🤯

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  6. Ummm i hate to burst everyones bubble and world view, but there is absolutely no fkin such thing as "space aliens" or extraterrestrials. They simply just do not exist. I used to like to think they did, but as I got older & wiser and the more research ive done, the only conclusion that i can come up with is , everything we are seeing in the skies already existed and they are terrestrial to this planet. There is no evidence of space aliens coming from other " star systems or galaxies" I hate to be the barrer of bad news for your " ancient astronaut theory", but thats all it is , a THEORY NOT FACT…!!!!😂😂

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