Actually it's simply ice on my skylight. I had hoped for some nice icicles to take pictures of, but all the good icicles hang from the roof of the house in the back, and I would hate for them to think I'm trying to stalk them. This looks kind of cool as well, however, don't you think? For someone who dislikes winter as much as I do I do like the look of ice really a lot. If I don't have to walk around in it too much, that is. Now I feel the urge to make something with rock crystal!