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human
>wood knocks

Person I worked with related a story about him and a buddy going fishing far innawoods. Hears loud clacks like somebody knocking wood on wood, kind of a pattern to it. He picks up his own stick and repeats the pattern on a tree and stops. Whatever was making the noise makes a different pattern. He repeats it and hollers out. Nothing. He packs up and him and hus buddy leave.

Confused him, confuses me. Is it supposed to be bigfoot making slapping his hand on a tree or something?
gpt
Gorillas slap ground as means of long-range communication. A smarter ape would figure to pick up a stick or a stone and bash the side of big tree instead.