Ancient Aliens · SEASON 19

The Top Ten Mysteries of the Deep

Episode 19 · 2023-09-08

★ 7.5
Ancient Aliens poster
Season 19Episode 19★ 7.5/10
  • Documentary
  • Mystery
  • Sci-Fi & Fantasy

Episode overview

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.

42 minutes

Season 19 episodes