Last May, three brothers from back east made a trip to the Siskiyou Mountains of Northern California for a bigfooting trip. Over a period of several days, they encountered indications that sasquatches were nearby, and even had a brief sighting. Their BFRO report is quite long and detailed, but for report junkies, it is definitely a good read.
The reason I draw your attention to their account is that a video is included in the report. This video does not contain any visual evidence, but it does contain very faint audio evidence. When you watch the video below, turn up your speakers or put on headphones and pay attention at the 1:10 mark. You will hear faint, yet distinct, clacking noises in response to the witness’ whoops.
Below is the article from 1897 on which the brothers’ expedition was based.