It was in the soft earth near the landing and I could see it plain.

I guess maybe it was made by a good shoe, because it was pointed, but it was all worn out, that was one sure thing, because there was a place that was made by a stocking or a bare foot, where there wasn't any sole at all.
Maybe you don't know much about deduction, but that's one thing scouts learn about, and I tried to make out what it meant, but it had me guessing.

Because the shoe was pointed and had the remains of a rubber heel--I could tell that by the big screw holes.

And that meant good shoes.

And I thought it was funny anybody who could wear good shoes would let them wear out like that.
Anyway, it was none of my business, only there was one mighty funny thing about that footprint.