An account in Vilas County, Wisconsin

I and two other friends were sitting in their vehicle at Eagle Lake during the evening. I was sitting in the back seat and our side window was rolled down. We heard an erie yell, it sounded to me like a bigfoot call. Only two of us heard it, as I said, our window was down. We only heard it once, which was enough for me. I went back the next day with the other friend and found a trail leading to an area with pole-sized trees downed by something, with some going one way, others another and on top of each other. I don't go on that trail anymore, not even during the day. That yell was inhuman.