Here in the PNW we get hurricane force winds all the time from low pressure systems off the coast bumping against the a fairly common inland high pressure situations that exaggerate the winds blowing out the Columbia gorge and through gaps in the Cascade mountains. The granddad all of them is the Columbus Day storm of 1962. Numerous wind gusts up to 170 MPH were reported in Oregon and Washington at the higher elevations. 46 people killed. Between 11 and 15 billion board feet of timber blown down. I have seen acres of trees flattened by these winds in localized areas and a few miles away no damage. Additionally the thunderstorms building over the Cascades can produce all kinds of destructive winds in the form of gust front down drafts that produce the same sort of high velocity winds in all directions away from the storms. Any of these effects can not only break timber, blow over timber creating root balls, and make large trees fly some distances from their root systems and create all sorts of tangled trees supported by standing trees. I had a tree branch about 6 inches in diameter impale itself about 3 feet into the ground. It was hard to get out. None of this has anything to do with bigfoot. I have yet to see a picture of some crossed trees that cannot be explained by natural forces. If it can be explained by natural tree fall, in all likelyhood that is what it is. I do know BF breaks off branches or small trees to scare humans. I have experienced that. Somehow I doubt that BF spends a whole lot of time and energy making huge creations out of fallen timber. For the most reclusive critters in the forest to go around making giant tree structures and announcing their presence does not make any sense to me.