Hmm..interesting I wouldn't put it past that it wasn't some sort of spirit or being. While most would dismiss this, considering you saw this native
american man as you described. I tend to look toward the history of the native american people and consider them to be some of the first really be in
touch with the "spirit" world so to speak; many of them practiced as shamans after all so who knows. More than that it could be some type of energy
or being trying to send a message to you or it could just be a result of them simply feeling the need to stay in the area of the property which may
have at a time been important to them.
If you have any other experiences on this let me know as I have a few possible ideas on this as of now.

