The Top Ten Alien Petroglyphs Ancient Aliens : Season 19 Episode 20
TV-PG History 42m
Aired: September 15th, 2023 @ 9:00 PM EST on History
Counting down the top ten alien petroglyphs around the world, from strange, human-like figures to flying craft and carvings of what appear to be astronauts. Could these mysterious carvings provide a record of extraterrestrial visitation?
