Ancient Aliens Season 19 Episode 20
Episode Title: The Top Ten Alien Petroglyphs
Countries:
United States,
Airing Date: September 15, 2023
Runtime:60 min
IMDb Rating:
Watch Ancient Aliens Season 19 Episode 20 full movie online free in HD with English subtitles – no download needed.
If ancient aliens visited Earth, what was their legacy, and did they leave behind clues that exist in plain sight such as sophisticated aircraft, complex electrical grids, and intricate construction machinery?
William Henry , Robert Clotworthy , Andrew Collins , Nick Pope , Erich von Däniken , Linda Moulton Howe , Philip Coppens , David Childress , Mike Bara , Jonathan Young , George Noory , 8 more , Nick Redfern , Robert Schoch , Michael Dennin , Hugh Newman , Giorgio A. Tsoukalos , David Wilcock , Bill Birnes , Ariel Bar Tzadok