WTF? Muddy Prints

I was returning home from the store when I saw the prints, 

at first taking them to be those of a big dog. 

After second look, I was surprised and dismayed to see 

they were the prints of a small child,

one who had perhaps been pulling a wagon.

There were no accompanying prints, such

as an adult might make, so why was this child out alone,

in his stocking feet, on a damp and dreary morning? 

Theme Day: Mystery Object

Hmmm, theme day comin' up. Topic: Mystery Object. 

Shall I post something I find to be mysterious? 

Or just enlarge an image until it's unrecognizable?

Here is it's info from a collectors' website:
"The No. 42 is a double petticoat type, with a long, smooth leakage path 
on the inner petticoat. It sits close to the cross-arm, thus giving the pin protection against rain splash. Its threads are accurately formed 
for a tight grip on the pin. The wire groove is a modern square type shown in Spec. 1-A-33 of the Association of American Railroads, and is accepted as standard for most telephone construction."


Hell, I just think they're pretty and have been fascinated by them
since childhood, when I first noticed them atop telephone poles.
Now I have three of my very own.


To see other mystery objects,
click to view thumbnails for all participants