Unsealed: Alien Files

Season 2 Episode 7: Aliens and Civilization

There are structures as old as time that continue to baffle historians and engineers the world over. Did we build these ancient megaliths ourselves or did aliens guide our hand?

Genre:

Documentary, Reality

Seasons:

4

Episodes:

82

Cast:

Quality:

HD

Duration:

20 min

First Air:

2012

Rating:

6.9