This didn't happen to me but a friend of mine was archery hunting in the woods behind his brothers house and came down through woods yelling he needed help.
This was in Pennsylvania in the fall and he was deer hunting. He said he saw an Ostrich. We of course asked him what he was smoking and he "No, I just saw an Ostrich so I shot with my bow. I need help dragging it out"
Low and behold there was an flippen Ostrich that probably was at least 6' tall laying there on the ground with an arrow sticking in it and it was still warm.
They actually taste pretty decent. Never found out where it came from.
Another time I was hunting in the woods in a pretty wild area and I found an air vent for an old Limestone mine. The brambles had grown over this 2' square hole and I stepped in it. The next thing I knew was my arm pits were at ground level and my new 12ga was bridging the hole and holding me up.
I finally got out of the hole and the barrel and receiver of my shotgun was bent. I looked down the hole, and could see bottom about 20' down. I went over the other side of the railroad tracks and found the entrance to the mine in a large depression in the woods. The mine had to have ran under the tracks or the tracks were built over it not knowing it was there. The entrance to this mine was huge, like 12'x12' and was standing wide open. I didn't go in there, I had had enough excitement for one day.