Examine the controversial theory that the monster known as Bigfoot may have existed in history. Native American tribes all over the United States have legends of Bigfoot that are both fascinating and terrifying. Oral traditions describe creatures that actively hunted people, especially children. Some believe these killings were happening into the 1800's. How do these legends correspond with ancient cave drawings that seem to depict giant, hairy beasts? Why do Native American totem poles and legends share many common attributes? Was this a real creature that developed in Southeast Asia, and eventually made its way to North America, and even Europe?

In 1958, a bulldozer operator in Northern California discovered 16-inch human-like footprints, and the legend of Bigfoot was born. Today, there are hundreds of reported sightings of big hairy monsters in America, but nowhere are the stories more prolific than in America's Pacific Northwest. Many reports of encounters with the giant hair-covered creature are accompanied by accounts of UFO activity and unexplained lights in the sky. Could the creature known as Bigfoot, or Sasquatch, really exist? If so, could it be living proof that extraterrestrials were not only here, but may still be living in our midst? Ancient Astronaut theorist Giorgio A. Tsoukalos joins the Olympic Project and anthropologist Dr. Jeff Meldrum on an overnight expedition on the Olympic Peninsula in Washington. Will their arsenal of high-tech equipment capture images or sounds that confirm Bigfoot's presence?

Documentary that investigates the legend of the giant, ape-like creature that thousands of people claim they've seen in the Pacific Northwest. Examines the footprints, hair, and other evidence that's been gathered and takes a look at the controversial 1967 Patterson film, which some believe proves the beast exists.

Bigfoot is America's most legendary creature and one that has always inspired more questions than answers. Could something resembling a massive man-ape really be roaming forests and hiding in the shadows undetected? Whether you believe in Bigfoot or not, there's something provocative about the idea that we could be living with an unseen monster. But what if one day, we did more than catch a glimpse of one? What if we captured the creature? This two-hour special, compiled by a director who traveled the world looking for proof Bigfoot actually exists, takes an unexpected turn when a Sasquatch capture is caught on camera. What happens when what most of us think is fiction becomes fact? And what does it mean for us all if the creature really is out there?

Frightening encounters with the legendary monster known as Sasquatch are reported in almost every state of America. These run-ins with terrifying upright hairy beasts date back centuries and sightings number in the thousands.

Native American history is full of "Hairy Man" stories and cave art that date back over a thousand years. Did Native Americans know the truth behind the Bigfoot legend?

Ancient petroglyphs in the Sierra Nevada Mountains depict footprints left by frightening packs of hairy man-like beasts. Now, MonsterQuest heads to the heart of California where witnesses are encountering aggressively territorial packs of Sasquatch. The team will investigate groups of large footprints found here and analyze compelling new video which could be that of the beast.