Old deer tracks. Exaggerated by being made in soft mud, and from subsequent desiccation.
Recent deer tracks. Just barely penetrating the soil/former mud.
I was on foot, and I could hear a motor that was skipping behind me. It was the mower on the left. Then I heard a second motor. It was the ORV that traveled faster and here is on the right (I turned around to get this shot). I continued walking down into the swamp where I found the tracks above. Because I had descended I couldn’t hear what happened, but both vehicles must have turned into the fix-it place that is before the swamp, as I did not see/hear them again. My hypothesis is that riding mower guy abandoned his ride to fix-it man, joined ORV guy, and they motored to whence they originated.