Report 35114: Recollection of spotting a tall figure cross a trail at dusk near Norris Lake

I was coming back from fishing at Big Ridge State Park with my mom, dad and small son. We were walking along a trail that led from the lake we were fishing at to the parking lot through the woods. My son and I were in front of my mom and dad and I had turned my head around to tell them something and when I turned back around there it was. It was about 20-25 feet in front of my son and I. It looked to be about 8-9 feet tall. I didn't see a neck on it and it looked straight ahead of it. It swung its arms when it walked and its strides were about 4-6 feet long. The trail itself was about 4 or 5 feet across. It was walking at about 5 mph. It was black with some brown mixed in. It walked very stiffly and the terrain it went on after walking in front of us was flat but thick with bushes and trees and I couldn't see it anymore. I gasped and turned around real fast and told my mom and dad that I had just seen bigfoot. We did not go look for tracks because it was just getting dark and we kept walking. We didn't hear any sounds after the encounter. It went so fast I just got a glimpse. I know it wasn't a human.