I read this article in the Colorado Springs Independent and a paragraph jumped out at me:
She learned about her [Nepalese] people’s animistic prayer traditions, and had shamans explain to her that yeti aren’t the silly abominable snowmen of cartoon legend, but actually shape-shifters and guardians of the mountains. At their urging, Lepcha now carries ginger in her pocket while traveling, so the yeti won’t disturb her.
Shape-shifters. Part of the faery folk, and not necessarily our friends, as I have suggested before — also here). That is why I think that people who go out in the woods and look for “tree structures” are doing it wrong, although I am sure they have a great time.
On the other hand, although “ghost” is an odd choice of words, these people might be on to something (link to YouTube video).