I was hunting about a quarter mile from my wife. I heard a horrific noise and then it came by me. A 500 pound elk, it passed by me and went on about a hundred yards, when a truck pulling a wagon rattled down a hill about a quarter mile away and it came tearing back to with in twenty yards of me. I made a grunty sound to scare it away and only made it mad. I felt pretty much alone right then. This is North west Iowa, there are not supposed to be rutting elk and mountain lions, but we have both apparently. There are no elk farms anywhere in this area either.