From the age of the dinosaurs to ancient Egypt, from early cave drawings to continued mass sightings in the U.S., each episode in this hit HISTORY Channel series gives depth to the questions, speculations, provocative controversies, first-hand accounts and grounded theories surrounding this age-old debate. Did intelligent beings from outer space visit Earth thousands of years ago? The 10 episodes include: Mysteries of the Maya; Unlocking the Stargates; The Whistleblowers; The Search for Extraterrestrial Intelligence; Jacques Vallee: UFO Pioneer; The Teachers; Egypt’s Giant Tombs; The Linda Moulton Howe Files; The Chosen; and Resurrecting Puma Punku. Includes interviews with David Hatcher Childress, Giorgio Tsoukalos, Erich von Daniken, William Henry, Travis Taylor, Linda Moulton Howe, Hugh Newman, Brad Olsen, and many others. With Spanish subtitles for those who want them.

ANCIENT ALIENS SEASON TWENTY. 7 Hours 10 Minutes. 2 DVDs in Box.