I think a lot of paranormal activity and crypto sightings are related to dimensional bleedover. I think that at certain times and places, reality gets a little muddled, and things eventually settle back into normal or near normal postions. Kind of like a river or stream that gets momentarily obstructed, causing eddies and currents, that eventually return to their normal path of least resistance. I mean, sometimes the stream might not return to exactly the same path, or you might get strange flotsam washed up on the shore, but it still returns to near normalcy.
I think a lot of the “ET” stuff is ultra or extra-dimensional, and they have the ability to traverse our reality as well as others. In a lot of UFO hotspots, other paranormal, seemingly unrelated, activities occur. This could be a result of their travel method, allowing increased bleedover between multiple realities. Could be that opening a doorway or rift would lead to all kinds of strange occurrences.
As far as sasquatch goes, the Native Americans believed that the old man of the forest walks between worlds.
Akso, if you are a Christian or a follower of most faiths ever to exist on earth they all state that their god(s) or spirit pantheons exist in another plain of existence - a sort of parallel world or worlds.
So if there are UFO craft - then their power source is creating dimensional bleed over?
Well, yea! Check out this article: http://www.sciencedaily.com/releases/2008/01/080131161812.htm
Particle Accelerator May Reveal Shape Of Alternate Dimensions
ScienceDaily (Feb. 4, 2008) — When the world's most powerful particle accelerator starts up later this year, exotic new particles may offer a glimpse of the existence and shapes of extra dimensions.