welcome to the forum, glad your looking around out there.
so this is purely my opinion. i do teach tracking classes though so there's experience behind my opinion here.
first, it looks like an old boot or tire print thats been smoothed by time and weather, the edges are really hard edges, there's no roundness that i can see
second, anything that would have stepped in that water would have also pushed that leaf into the substrate, it does have some dirt on it but its dried out. the substrate also has a lift in the shape of a V just by the leaf that wouldnt be left behind by something walking through that day.
those are my quick take aways on the image. keep your eyes peeled, never know what you'll find out there.