Underground Alien Connections *What You Haven't Seen* | Ancient Aliens | History

Check out these otherworldly discoveries. See more in this Ancient Aliens compilation.

1. Forbidden Caves 0:00
2. Underground Aliens 5:45
3. Forbidden Caves 2 12:05
4. Underground Aliens 2

Watch full episodes and stay up to date on all of your favorite shows on The HISTORY Channel website at http://history.com/schedule.

#HISTORY #AncientAliens

Find out more about the show and watch full episodes on our site:
https://histv.co/AncientAliens

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

Don't miss a video! Subscribe NOW:    / @history  

ABOUT THE HISTORY CHANNEL:
The HISTORY® Channel, a division of A+E Global Media, is the premier destination for historical storytelling. From best-in-class documentary events, to a signature slate of industry leading nonfiction series and premium fact-based scripted programming, The HISTORY® Channel serves as the most trustworthy source of informational entertainment in media.

FOLLOW HISTORY CHANNEL:
Watch Full Episodes: https://www.history.com/videos
Sign Up For History Emails: https://www.history.com/emails/sign-up
Browse Topical Videos: https://www.history.com/topics
Facebook:   / history  
Instagram:   / history  
TikTok:   / history  
X:   / history  
YouTube:    / @history  

Copyright Notice: This video and my YouTube channel contain dialog, music, and images that are property of The HISTORY® Channel. You are authorized to share the video link and channel, and embed this video in your website or others as long as a link back to our YouTube Channel is provided.

© 2025 The HISTORY® Channel

Underground Alien Connections What You Haven't Seen | Ancient Aliens | History
   / @history