In the Expedition Bigfoot series, tree structures are discovered in remote areas hundreds of miles apart. They appear to be similar.
Faked for the cameras? Constructed by hoaxers (although to do so in such very remote areas and hope a camera crew discovered them seems crazy)
Then there are the infra red images of 'something' nearby, often stated to be no known species in that area.
In the approx 1950s, respected mountaineer Chris Bonnington took a team to the Himalayas to try and ID Yeti evidence and artefacts. Evidence was found, but on return to the UK, Customs lost all the evidence he had.
I have no idea whether Bigfoot, Sasquatch, Yeti exists outside of legends, but the more casts of large footprints, recordings of responses to broadcast alleged Bigfoot calls, tree structures, tree knocks, IR images, nests etc. that are compiled in extremely remote areas around the world seem to have more similarities than differences, the more I wonder ...