Ancient Aliens · SEASON 21
The Top Ten Mysterious Mountains
Episode 6 · 2025-03-14

- Documentary
- Mystery
- Sci-Fi & Fantasy
Episode overview
Ancient Aliens is counting down ten mysterious mountains that are notorious for otherworldly phenomena. From a summit in Sri Lanka that is said to be a portal to other worlds, a volcano in Washington that was at the center of a famous UFO sighting and a mesa in New Mexico believed to contain an alien base. Could these strange peaks provide evidence of extraterrestrial contact?
60 minutes
Season 21 episodes
1. The Top Ten Extraordinary Discoveries2025-02-07
2. The Top Ten Mysterious Monoliths2025-02-14
3. The Top Ten UFO Crashes2025-02-21
4. The Top Ten Unexplained Technologies2025-02-28
5. The Top Ten Secret Projects2025-03-07
6. The Top Ten Mysterious Mountains2025-03-14
7. Mysteries of the Aztecs2025-03-21
8. The Glowing Orb Phenomenon2025-03-28
9. The Legacy of J. Allen Hynek2025-08-29
10. The Volcano Factor2025-09-05
11. The Birdman Mystery2025-09-12
12. The Abduction Files2025-09-19
13. The Giants2025-10-02
14. Aliens in Our Midst2025-10-09
15. Britain's UFO Files2025-10-16
16. Mysteries of the Norse Gods2025-10-23
17. Secrets of Japan2025-11-06