It has been long understood fact that tee-pee markers, rock stacks and arch formations are common place during and near bigfoot sightings. What do they mean or better yet; what do they represent? Anyone's guess is a good as the next. But let us look closer. The Native Americans always considered the bigfoot beings a "a people". Similar in appearance but nevertheless a tribe of "swarthy, hairy and overly-large" group of people (or tribe if you will)".
Native Americans knew that these being were primarily nocturnal. In other word's, they chose to show up during the night when others were asleep or getting ready for bed. My theory is that this technique primarily allowed them considerable concealment. Are they using the covertness of dark as a tool "as to not to scare the 'be-Jesus out of others? Or is it simply to come and probe around looking for food and keepsakes?
Creating such things as tee-pees, rock piles or stacks have long since been related to Indian tribes marking the land for passer-byers' as to the locations of water, food sources or safe havens. Would it not be common since that the bigfoot also knew of these techniques and applied them so that other bigfoot would see the tell-tale signs while passing from one area to the next? We have to then ask ourselves where the bigfoot learned these messages or "greeting cards" as I call them. Did American Indians and bigfoot once co-exist peacefully? Did they have learning relationship together at one time?
So...what should we do when we run across these signs? Well, first of all we should document them by photographing, drawing or videoing them. We should then carefully inspect each branch or rock for signs of unusual hair or possible habitation. The last thing one should do is to disassemble any unknown structure realizing that something with an "opposable thumb" had to make them. In other words, something had to have the dexterity to situate these items just so. Which eludes to the fact that these beings are creative. Creative in such a method that only their kind would recognize these signs in the forest (unless you are a researcher and know to look for these items). The typical hiker or woodsman would merely shrug these forms of communication off without giving them a second thought.
Secondly, we should try to interpret a meaning for these structures. Are they in an area with abundant food? Are they temporary concealed shelter? Are they ritualistic in nature? Look for the thing that should not be there and less so the obvious. Lastly, we should try to better understand why these formations, especially the "tee-pee's" are that particular shape. Why aren't they square? Or round? OR rectangular? Why pyramidal (or conical) in shape? The overall shape in general of tee-pee's is amazing and raises a lot of questions within itself. Why do rock stacks typically start off with large stones from the bottom only to taper off into smaller stones at the top?