It’s in an area of the yard that’s pretty clear of trees, though there are some very tall evergreens in the area. It’s _possible_ some snow blew over, but the pattern is uniform enough to make me think that it’s not.

The area underneath this is all relatively flat grass and Pullman uses gravel rather than any salt. I do think it’s some kind of heat radiation thing, but in a way I can’t describe. 🙂