![Ancient Aliens: Did Aliens Build a Global Energy Grid? Ancient Aliens: Did Aliens Build a Global Energy Grid?](https://i.ytimg.com/vi/7d7OeVWGXKg/maxresdefault.jpg)
Are these ancient stone structures actually harnessing energy from our planet? 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 ...
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