megaliths
Discussed across 5 episodes of Ancient Aliens.
Episodes
- S12E8 The Alien Frequency 2017-06-16
- S18E2 Mystery of the Standing Stones 2022-01-14
- S19E4 The Power of the Obelisks 2023-02-03
- S21E2 The Top Ten Mysterious Monoliths 2025-02-14
- S22E6 Mysterious Monuments 2026-03-05