My friends and I used to go hiking and camping every spring and summer, in an area known as the Bacon Woods. We had a number of odd events happen over the years there.
This particular time, about June of '88, Dave and I had gone out for a day hike; we'd decided to hike up to our usual campsite, and see what if any fixing up the fire pit and such might need. We'd brought Doag, Daves' large mixed breed dog, with us.
We parked at Mill Hollow; metro parks situated north of Bacon Woods, and were soon briskly walking down a trail running parallel to the Vermilion River. It was a beautiful, warm early summer day.
Around noon, we'd reached a large clearing, about fifteen feet or so across, midway to our destination, so we decided to break for lunch. We built a small fire, and soon had water heating for coffee, to wash down our sandwiches. We fed Doag, who stretched out for a nap after his meal.
After eating, Dave and I were sitting on logs, finishing our coffee and having cigarettes, when Doag suddenly rolled over and sat up, staring down the path in the direction we'd come from. I looked down the path, and through the brush and branches I could see a man headed our way. He appeared to be tall, a bit taller than Dave, who is 6' 1", dressed in woods camo from his hat to his trousers.
I didn't think anything of it, as we often ran into people out for a hike, just like us, or fishing. The figure got to the edge of the clearing, and...Vanished.
We both jumped up, and went over to the edge of the clearing, looking for the fellow, who seemed to have just disappeared. Doag, meanwhile, sat there, as if bored by it all.
We never saw the man, or whatever, again.