Some Ancient Astronaut Theorists suggest that deep within our own planet could be another earth in this clip from Season 10, Episode 6, “The Other Earth”. #AncientAliens
Subscribe for more from Ancient Aliens and other great HISTORY shows:

Find out more about the show and watch full episodes on our site:

Check out exclusive HISTORY content:
History Newsletter:
Website –
Facebook –
Twitter –

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

HISTORY® is the leading destination for award-winning original series and specials that connect viewers with history in an informative, immersive, and entertaining manner across all platforms. The network’s all-original programming slate features a roster of hit series, premium documentaries, and scripted event programming.

source