How Were These Monuments Built? | Ancient Impossible (S1, E3) | Full Episode
Carving the Grand Canyon | How the Earth Was Made (S2, E1) | Full Episode
Land, Sea & Sky: UFO Sightings *Marathon* | UFO Files
High Tech Research on the Ranch | The Secret of Skinwalker Ranch
Ancient Tech That's OUT OF THIS WORLD | Ancient Aliens
Government Interest in the Ranch | The Secret of Skinwalker Ranch (S1, E8) | Full Episode
Who Was D.B. Cooper? | History's Greatest Mysteries (S1, E1) | Full Episode
Aliens in Australia | Ancient Aliens
Genghis Khan’s Bloody Rise | Mankind: The Story of All of Us (S1, E6) | Full Episode
The Threat Beneath California | Mega Disasters (S2, E12) | Full Episode