Jack Frost, Part II

We see hoar frost every year. But, we don't usually have four days of fog. After a couple days, we thought the frost on the trees (and other things) was as thick as it could get.

So, we took this photo.

Then, we noticed that the frost got even thicker. The picture below is the same tree, taken two days later. Note the center of the tree. Think things might be getting a bit heavy?