The first reported Bigfoot Sasquatch
sighting in the area by European settlers occurred in 1886. One of the most famous sightings occurred near the Klamath River in 1967 in which a few seconds of movie was filmed.
In fact, the Klamath River area is ground zero for Bigfoot/Sasquatch sightings. More sightings have occurred in this area then anyplace else in the world.
(This is frame 352 from the Patterson-Gimlin Bigfoot film