Ancient Aliens (2010)

Episode Overview

In the heart of Cambodia lies Angkor Wat, the largest ancient temple complex. Within its towering stone walls, researchers have stumbled upon an astonishing engraving of a stegosaurus. This discovery raises a perplexing question: how could ancient civilizations have depicted a creature that scientists assert vanished millions of years ago? What led to the extinction of these magnificent beasts? Could it be that an extraterrestrial species eliminated the dinosaurs to pave the way for the emergence of humanity?