An account in Hamilton County, Iowa

My Cousin and I were walking in the woods, in an area over-looking the Boone River. We came to a steep ravine, just over the river and began to look around. As I was glancing I saw something out of the corner of my eye, at first glance I thought that it was a deer, but upon closer inspection, It appeared to be a tall man. I thought that it was my cousin's brother trying to scare us, as he is very tall. But this thing was large and reddish brown, and within a few steps disappeared into the woods without a trace.