Roger Patterson (1926–1972) filmed what became known as the Patterson-Gimlin film on 20 October 1967 at Bluff Creek, California — a 59.5-second 16mm film of a large bipedal figure that is the most scrutinised and debated piece of cryptid evidence ever recorded. Despite decades of attempts, no one has conclusively demonstrated it to be a hoax.
Patterson was a rodeo rider and amateur Sasquatch enthusiast who had already written a self-published book on Bigfoot before making the film. On a research trip to Bluff Creek with Bob Gimlin, their horses were startled by a large figure crossing a gravel bar. Patterson grabbed his rented Kodak K-100 camera and ran toward it, filming as he went. The resulting footage shows a large, hair-covered bipedal figure, later designated "Patty," walking away and turning to look at the camera.
Patterson begins researching Sasquatch after reading a True magazine article; starts field expeditions to the Pacific Northwest
Self-publishes Do Abominable Snowmen of America Really Exist? — early documentation of witness accounts
Films the Patterson-Gimlin film at Bluff Creek, California on October 20; immediately submits it for analysis
Film analysed by technicians at Universal Studios who cannot explain how the suit was made
Patterson dies of Hodgkin's lymphoma aged 45, maintaining the authenticity of his film to his death
Bob Heironimus claims to have been the man in the suit; his claimed measurements are inconsistent with the filmed subject
New stabilised and enhanced analysis by MK Davis continues to reveal anatomical details that challenge the hoax hypothesis
Patterson's footage remains the most analysed piece of cryptid evidence in history. After 55+ years, no definitive hoax mechanism has been demonstrated. The subject's anatomy — particularly the muscle movement beneath the suit, if it is one — continues to challenge film effects experts.
Editorial note: All profiles are compiled from public record, testimony, and published sources. Unverified claims are noted. Project Strange does not assert the truth or falsity of any individual's claims.