In a dense forest in the Pacific Northwest, numerous wildlife are agitated and on alert, by an unseen presence, whose large, human-like reflection is seen along a river.

By running statistical data through modern computers, a site in northern British Columbia has been determined by the organization as the most likely spot for a population of Sasquatch to live undisturbed.

As the film progresses, tales of Sasquatch encounters by earlier explorers are interwoven with the current expedition's adventure and told as campfire stories.

These scenes are recreated by uncredited cast members and include the Ape Canyon incident in which miners are attacked while sleeping in their cabin and an encounter by early pioneer explorers Bauman and Jessup.

While some team members take plaster molds of the tracks, Hank and his dogs follow a scent to the base of a sheer rock wall but cannot continue due to the difficult terrain.

In the final scene the camera pans out to a wide shot of the team departing, showcasing a picturesque view of the valley and its surrounding mountains.

[3] Olson's father was the founder of American National Enterprises, a Salt Lake City-based film production company that specialized in nature documentaries.

[3] Animals were supplied by Dick Robinson who, along with Sasquatch co-producer and editor John Fabian, went on to make a Grizzly Adams-type film "The Life and Legend of Buffalo Jones".

A remastered version complete with an additional six minute introduction sequence (shown separately from the main picture) was released by Code Red on Blu-Ray in late 2016.