Tracker Spots 8-Foot, 500-Pound Bigfoot After Decade-Long Hunt

If you've ever wanted to sit down with one of the original Bigfoot investigators and hear their story straight from their own mouth, this classic 1975 documentary is an absolute must-watch. Recently resurfaced and posted in full on YouTube, it's a fascinating time capsule from the early days of Sasquatch research that still holds up today. The film follows Ivan Marx, a seasoned tracker who spent his life hunting down predators and protecting livestock across the American West and Alaska. Marx wasn't always a believer. In fact, when ranchers in Kodiak first told him Bigfoot was killing their cattle, he thought they were out of their minds. It took ancient petroglyphs, mysterious 18-inch footprints, unidentified hair samples, and eventually a face-to-face encounter in the woods to change his mind entirely. What makes this documentary so compelling is Marx's credibility as a tracker. He wasn't some weekend warrior stumbling into the woods with a flashlight. He worked with the government, the sheriff's office, and federal game wardens. He knew animal tracks the way most people know their own handwriting. So when he says those 18-inch footprints with a 52-inch stride couldn't have been made by any known animal, you tend to listen. The film takes viewers through several investigations, including a trip to the Redwoods to search ancient tree caves, a stakeout on the Oregon coast during a night fish run, and a snowy expedition that ended with Marx finding a bear that had been killed by something with enormous strength. There's even a moment where he describes the nauseating musky odor that hit him before he saw the creature itself, standing roughly 8 feet tall and weighing around 500 pounds. One of the most interesting segments covers the petroglyphs Marx's brother-in-law showed him in Arizona. The drawings depicted creatures with oversized hands and feet, and the stories that accompanied them told of these beings stealing Indian children in the night, causing entire villages to be abandoned out of fear. The drawings were estimated to be 700 years old, which adds a fascinating historical layer to the Sasquatch legend that often gets overlooked. The documentary also touches on the cultural naming of the creature across different Indigenous groups. Eskimos called the creature Bushman, the Kovville Indians of Washington called it Sasquatch, and the Hoopa people of Northern California had their own name for it. This kind of cross-cultural acknowledgment of a large, hairy, bipedal being is something researchers still point to today as evidence that something real has been walking these woods for a very long time. Marx also addresses the skeptics head-on. He talks about kids making plywood footprint fakes, hunters exaggerating stories, and the general ridicule that came with admitting you believed in Bigfoot. But he also makes it clear that once you've seen those eyes glowing red in the dark, once you've smelled that musky odor, once you've held a plaster cast of a print that no machine could have faked in that terrain, the jokes stop being funny. The film doesn't wrap everything up in a neat bow, which honestly makes it feel more authentic. Marx admits he ran out of patience, out of time, and out of money chasing leads that sometimes turned out to be coyotes or sleepy bears. But the core of his story, the encounter, the tracks, the hair samples, the broken-necked bear, that all stays with you. For anyone serious about Sasquatch research, this is foundational viewing. Ivan Marx was one of the first modern investigators to take a scientific approach to tracking the creature, and his methods influenced generations of researchers who came after him. The footage is grainy, the music is very 1970s, but the content is gold. Do yourself a favor and carve out an hour to watch this one. It's the kind of documentary that reminds you why this subject has captured imaginations for so long, and why people keep heading back into the woods looking for answers.