Meandering Microtine?

This one puzzled me. It looks like a vole trot, but I wouldn't think a
vole would travel on the surface for so long, in relatively sparse
cover. There was a bit of a crust under the top dusting, so maybe it
couldn't tunnel. Still, it trotted on and on and on without even trying
to tunnel. A walking mouse? According to Elbroch's Mammal Tracks and
Sign, a white footed mouse walks only under dense cover.