Ancient Aliens

Season 3, Episode 13

Episode Title: Aliens and the Secret Code

Air Date: 2011-10-19

Overview:

Megalithic monuments linked together by electromagnetic energy... Prehistoric ruins arranged across vast distances in straight lines... And advanced mathematics carved into landmarks more than 5000 years ago. Were ancient man's spectacular structures built by humans alone? Or do they bear evidence of being designed - and interconnected--by otherworldly visitors?