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S02E04 - Underground Aliens
| If extraterrestrials influenced human history, can evidence of their existence be found in hidden tunnels and caverns around the world? Could a cave in Ecuador contain metallic books inscribed with secrets of alien technology? Was an ancient underground city in Turkey built with alien help... or as a refuge from an alien attack? | |
| Uitzending: | 18/11/2010 |
| Rating TheTVDB: | 7.8 (23 stemmen) |
| IMDB ID: | Niet beschikbaar |
| Laatste update: | 25/04/2023 om 18:01 |