Lisa Shiel contemplates ancient Anasazi cliff dwellings. Were they hiding from Bigfoot? With signs that villages had been burned to the ground, along with evidence of cannibalism it seems that maybe there was a lot to make people want to hide up in the cliffs where they could see what was coming. That aside there are plenty ground settlements near there that were lived in at that time.
Backyard Phenomena: Ancient Bigfoot Wars: The Americas