The Patterson-Gimlin Film: The 1967 Footage That Changed the Bigfoot Mystery Forever
Few pieces of film have generated as much fascination, analysis, skepticism, and debate in the world of cryptozoology as the Patterson-Gimlin film.
Shot in Northern California in 1967, the brief 16mm film appears to show a large, dark, hair-covered figure walking upright across an open area near Bluff Creek. At one point, the figure turns its upper body and looks back toward the camera before continuing toward the trees.
More than half a century later, those few seconds remain arguably the most famous visual evidence ever offered for the existence of Bigfoot.
The film has been examined by anthropologists, filmmakers, costume experts, skeptics, Bigfoot researchers, and generations of curious viewers. Some see an animal whose proportions and movement would have been extraordinarily difficult to reproduce in 1967. Others see a person wearing an elaborate costume.
What no one has produced is an explanation accepted by everyone.
October 20, 1967
According to Roger Patterson and Bob Gimlin, the encounter occurred on October 20, 1967, at Bluff Creek in Northern California.¹
Patterson had already developed a serious interest in Bigfoot and was working on a film project related to the subject. Gimlin, an experienced horseman and Patterson’s friend, accompanied him into the Bluff Creek area.
The location was already important in Bigfoot history.
Northern California had experienced a series of alleged large-footprint discoveries beginning in the late 1950s, and the publicity surrounding tracks found near Bluff Creek helped popularize the term “Bigfoot.”²
Patterson and Gimlin were exploring the area on horseback when, according to their account, they encountered something neither man expected to see.
A large, upright, hair-covered figure was walking across an exposed section of terrain near the creek.
Patterson grabbed his 16mm movie camera and began filming.
The Encounter on Film
The resulting footage is short.
The surviving Patterson-Gimlin sequence contains approximately 954 frames and, when projected at 16 frames per second, lasts about 59.5 seconds. The exact duration depends upon the camera’s original filming speed, which has itself become part of the technical debate surrounding the film.³
At first, Patterson’s camera movement is extremely unstable as he moves into position.
Then the image steadies.
The figure can be seen walking away from the camera on two legs. It has broad shoulders, long arms and a body covered in dark hair.
Then comes the moment that would become one of the most recognizable images in Bigfoot history.
The creature turns and looks back toward Patterson.
One particular image from this sequence—commonly known as Frame 352—has been reproduced countless times in books, documentaries, television programs, websites and Bigfoot research.
Researchers eventually gave the figure a nickname:
“Patty.”
The name reflects the widespread interpretation that the subject appears to be female because breasts are visible in the footage.
But the fundamental question remains:
What exactly did Patterson film?
The Case for an Unknown Animal
Supporters of the film’s authenticity have spent decades studying the figure’s anatomy and movement.
One argument centers on body proportions.
Researchers have attempted to calculate the relationship between the figure’s arms, legs, torso and overall height. Some proponents argue that the apparent proportions differ significantly from those of an average human and would therefore have been difficult to create simply by placing a person inside a costume.
Others point to what appears to be movement beneath the hair covering.
In stabilized and enlarged versions of the footage, proponents have argued that areas of the thighs, shoulders and back appear to move in ways consistent with underlying muscle or soft tissue rather than a loose costume.
The figure’s gait has also received considerable attention.
Its knees appear bent during portions of the stride, the arms swing noticeably, and the subject seems to move across the uneven terrain with little difficulty.
For proponents, these characteristics suggest Patterson captured something biological rather than theatrical.
But those interpretations remain disputed.
What Scientists Saw
One of the scientists who examined the film was British primatologist and anthropologist John Napier, who wrote about Bigfoot evidence in his 1973 book Bigfoot: The Yeti and Sasquatch in Myth and Reality.
Napier did not find the film convincing evidence of an unknown primate.
After analyzing the figure’s movement and anatomy, he concluded that portions of the subject appeared distinctly human. Skeptical discussions of Napier’s analysis note that he believed the gait was compatible with a person deliberately exaggerating his stride.⁴
Yet Napier’s reaction illustrates one reason the film has endured.
Even scientists skeptical of its authenticity found the footage unusual enough to examine seriously.
Anthropologist Grover Krantz later became one of the better-known academic proponents of the film’s authenticity, while other researchers continued to reject it. The disagreement has persisted for decades.³
Could It Have Been a Costume?
The most straightforward skeptical explanation is also the oldest:
The figure was a person wearing an ape suit.
That possibility cannot be dismissed merely because the film looks impressive.
Hollywood and television productions had been creating ape costumes long before 1967, and Patterson’s preexisting interest in Bigfoot naturally raises questions about whether the encounter could have been staged.
The skeptical case became considerably more specific decades later.
A Yakima-area acquaintance of Patterson named Bob Heironimus publicly claimed that he had been the person inside the costume. His story received widespread attention after appearing in Greg Long’s 2004 book The Making of Bigfoot.³
Heironimus claimed the event had been staged and described wearing a modified ape costume.
Costume maker Philip Morris separately claimed that he had sold Patterson a gorilla suit before the filming. Skeptical investigators have argued that Patterson could have modified such a suit to create the figure seen at Bluff Creek.⁴
If those accounts are accurate, one of the greatest mysteries in cryptozoology would have a remarkably ordinary explanation.
But the claims haven’t ended the debate.
Problems With the Hoax Explanation
Bob Gimlin has consistently denied participating in a hoax.
Patterson also maintained until his death in 1972 that the creature he filmed was genuine.³
Researchers defending the film have challenged aspects of both Heironimus’s and Morris’s accounts, pointing to inconsistencies in descriptions of the alleged costume and questioning whether the suit Morris described corresponds closely enough with the figure visible in the film.
Most importantly, the alleged original costume has never been produced for examination.
No surviving suit has been conclusively connected to the Patterson-Gimlin film.
That does not prove that a costume never existed.
But it prevents researchers from performing what would otherwise be one of the most useful comparisons possible: placing the alleged original suit beside the film and determining whether it could produce the figure seen on screen.
Attempts to recreate the footage have also become part of the controversy. Skeptical and pro-Bigfoot researchers disagree over whether modern reproductions demonstrate how easily the film could have been staged—or instead demonstrate how difficult the original appearance is to duplicate.⁵
The Footprints at Bluff Creek
The film was not the only evidence Patterson and Gimlin reported finding.
They said tracks were present at the location after the creature disappeared.
Footprint casts were subsequently associated with the encounter and became another important element of the Patterson-Gimlin case.
But, like the film itself, tracks cannot independently establish what created them.
Bigfoot footprint evidence has a complicated history that includes potentially legitimate unidentified tracks as well as confirmed hoaxes. Bluff Creek itself is connected to one of the most famous Bigfoot hoax controversies: after the death of logger Ray Wallace, members of his family claimed he had been responsible for creating some of the large footprints that helped launch the Bigfoot phenomenon in Northern California during the 1950s.²
The Wallace revelations gave skeptics another reason to view evidence originating around Bluff Creek cautiously.
They did not, however, demonstrate that Wallace created the subject appearing in Patterson’s 1967 film.
Why Frame 352 Became an Icon
If there is one image that defines modern Bigfoot culture, it may be Frame 352.
The pose is instantly recognizable.
The figure walks forward while twisting its torso and looking backward toward Patterson’s camera. One arm swings behind the body while the opposite leg advances.
That fleeting moment has become the unofficial visual symbol of Bigfoot.
It has been reproduced on documentaries, T-shirts, signs, advertisements, television shows and internet memes. Even people with little interest in cryptozoology often recognize the silhouette.
In that sense, the Patterson-Gimlin film accomplished something far beyond providing alleged evidence.
It gave Bigfoot a visual identity.
Before 1967, Sasquatch existed largely through eyewitness descriptions, footprint casts, Indigenous traditions and newspaper stories.
After Patterson’s film, the public could actually watch something that appeared to be Bigfoot walking across the screen.
Why Hasn’t the Film Been Definitively Debunked?
This question requires some care.
Saying the film has never been conclusively proven to be a hoax does not mean that it has been proven authentic.
Those are very different standards.
The burden of demonstrating the existence of an unknown North American primate remains extraordinarily high, and a short piece of ambiguous film cannot provide biological confirmation.
As anthropologist David Daegling has observed in discussions of the footage, advocates of authenticity carry the burden of demonstrating that the subject is something other than human.³
At the same time, no universally accepted demonstration has established exactly how Patterson would have created the figure, who definitively wore the alleged costume, and what the costume actually was.
That leaves the film occupying an unusual middle ground.
It is neither verified biological evidence nor a universally resolved hoax.
Why Hasn’t Better Evidence Appeared?
For skeptics, perhaps the most damaging argument against the Patterson-Gimlin film isn’t contained within the film at all.
It is what happened afterward.
More than five decades have passed.
Cameras have gone from expensive film equipment to devices carried by billions of people every day. Hunters use trail cameras. Researchers use drones. Wildlife photographers employ high-resolution digital cameras. Remote forests can be monitored continuously.
Yet no subsequent Bigfoot film has achieved anything approaching universal scientific acceptance.
Skeptical researcher Benjamin Radford has pointed to this problem: despite the dramatic improvement and proliferation of cameras, the quality of alleged Bigfoot evidence has not experienced a corresponding transformation.²
For skeptics, that makes a genuine unknown primate increasingly difficult to reconcile with the absence of definitive photographs, bodies, bones, DNA or other biological evidence.
For believers, however, the absence of confirmation does not automatically explain what Patterson filmed in 1967.
And so everyone eventually returns to those same frames.
Real Animal or Elaborate Hoax?
There are essentially two broad interpretations.
If Patterson and Gimlin were telling the truth, the film may represent one of the most extraordinary wildlife recordings ever made—a brief encounter with a large, unidentified bipedal primate living in the forests of North America.
If the skeptics are correct, the film represents something very different but historically fascinating: an extraordinarily effective hoax whose execution was convincing enough to generate serious debate for more than half a century.
Either possibility makes the film remarkable.
What should be avoided is claiming that the footage has scientifically established Bigfoot’s existence.
It hasn’t.
Likewise, the existence of allegations from Heironimus and Morris should not be described as definitive proof of a hoax. Their claims are evidence within the historical controversy, not a universally established resolution.
More Than 50 Years Later, We Are Still Watching
Roger Patterson died just five years after filming the creature.
Bob Gimlin lived long enough to see the footage become a cultural phenomenon and has continued to maintain that the encounter was genuine.³
The original seconds of shaky 16mm film have meanwhile been stabilized, enlarged, digitized and examined frame by frame.
Each technological improvement seems to generate another round of debate.
Some viewers see muscle movement.
Others see fabric.
Some see non-human proportions.
Others see an ordinary human gait disguised by bulky padding.
And somewhere between those interpretations walks the dark figure captured at Bluff Creek in October 1967.
Whether “Patty” was an undiscovered animal or one of the most successful costumes in modern folklore remains unresolved.
But one thing is difficult to dispute:
Roger Patterson’s camera captured less than a minute of footage—and changed the Bigfoot mystery forever.
Sources & Footnotes
1. Patterson-Gimlin Film — historical date and location.
The footage is attributed to Roger Patterson and Bob Gimlin and was reportedly filmed at Bluff Creek in Northern California on October 20, 1967. Contemporary and later histories consistently identify this as the date and location of the encounter.
2. Smithsonian Magazine — “Why Do So Many People Still Want to Believe in Bigfoot?”
Smithsonian’s historical overview discusses the development of the Bigfoot phenomenon around Bluff Creek, the Patterson-Gimlin film, the later Ray Wallace hoax revelations and skeptical arguments concerning the lack of improved evidence despite the proliferation of cameras.
Read the Smithsonian article
3. Patterson-Gimlin Film — historical and technical record.
Reference material on the film documents Patterson and Gimlin, the approximately 954 surviving frames, projection-speed questions, Patterson’s continued assertion that the film was genuine, Gimlin’s denial that he participated in a hoax, scientific commentary and Bob Heironimus’s later claim that he wore a costume.
4. Skeptical Inquirer — analysis of the Patterson-Gimlin film.
Skeptical researchers cite primatologist John Napier’s analysis of the figure’s gait and anatomy and discuss the later claims of Bob Heironimus and costume maker Philip Morris as evidence supporting a costume-hoax explanation. These remain claims within a disputed historical record rather than independently demonstrated proof of how the film was made.
Read the Skeptical Inquirer analysis
5. Skeptical Inquirer — attempts to reproduce the film.
Later analysis has also examined claims that television programs or researchers successfully recreated the Patterson-Gimlin footage. Even skeptical writers have noted that many purported recreations did not reproduce all of the original conditions, equipment, terrain, subject appearance and other variables simultaneously.
Read the film-recreation analysis
Editorial Note
Bigfoot Central presents historical Bigfoot cases as subjects for investigation rather than established proof of an undiscovered species. The Patterson-Gimlin film remains disputed. Descriptions such as “creature,” “figure,” “Patty,” and “Bigfoot” in this article refer to the subject depicted in the film and should not be interpreted as scientific identification of that subject.