Ancient Astronaut Theorists believe a massive pyramid located in Teotihuacan, Mexico could commemorate the arrival of extraterrestrials,...

Former police detective Dave Paulides investigates a mysterious disappearance at Mount Shasta, in this clip from Season 17, "The Mystery...

Ancient Astronaut Theorists believe that the Rudston Monolith possesses unusual powers that spark strange phenomenon, in this clip from...

Ancient Astronaut Theorists proposed a notion that the human race originated on Mars, and our journeys into space could be leading us...

A strange monolith appears at the canyons in Utah, leaving people shocked and confused. Was this the work of extraterrestrials trying to...

The ancient ruins of Puma Punku have mystified archaeologists ever since their discovery. The massive stones are carved into blocks that...

Everyone's heard of Area 51. However, there's an underwater facility that's also highly secretive. Perched on the cusp of The Bermuda...

A strange keyhole-shaped formation protruding from Mars may directly correlate to a similar structure on Earth - Theorists believe...