I have not seen the Sasquatch, but here's a article that talks about what it is, and the sightings that people believe that are related with him.

"Perhaps the most compelling photographic evidence of Bigfoot is a controversial short film shot by Roger Patterson in 1967, which appears to document a female Bigfoot striding along a riverbank in northern California" [1].

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Sources:

[1]. Forensic Expert Says Bigfoot Is Real. National Geographic. (October 23, 2003). https://www.nationalgeographic.com/culture/article/forensic-expert-says-bigfoot-is-real
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