The Top Ten Mysteries of the Deep Ancient Aliens : Season 19 Episode 19
TV-PG History 42m int(0)
Aired: September 8th, 2023 @ 9:00 PM EST on History
Counting down 10 mysteries of the deep, from sunken continents to puzzling ruins on the ocean floor and even artifacts that might be remnants of Atlantis; these underwater mysteries could provide a record of extraterrestrial visitation.