Sooooooo....

My grandpa used to live up in Tacoma.... He went hunting in his van that he had a bed and kitchen in back in the day. Before I was born and all. Out in the woods he was just going to bed in the van and heard some weird scream/howling and didnt think too much of it. The noise stopped and he managed to relax I guess. Shortly there after there was banging on the outside of the van and then his van started rocking back and forth from side to side like someone was shaking it.... Had no idea what it was, till his death he was convinced it was big foot.