Some serious frost

We have had some really cold weather here lately and if there is no wind, it can create some pretty ice crystals.  Here is a photo I took the other morning when I was out playing with the dog.  Can you tell what it is?

That's actually the surface of the street.  I have seen ice on trees and bushes, but I can't remember seeing this many crystals on the street.  Here's a closer view.

I felt a bit bad that Jasper and I were stomping all over these as we walked along, but I guess we were easier on them than the eventual automotive traffic.