Flight Level 380

I was winging my way down to Texas today, and looking for photographs everywhere. On board the 737, I was looking out the window at the wing, and at the clouds trying to find interesting things. Then I looked down at the little ledge on the window next to my seat, and noticed a strange pattern. It was the shadow of ice crystals that had formed in the window, from the extreme cold at high altitude. I photographed the sunlight and the shadows, and then looked some more. I decided to photograph the ice crystals themselves, against the blue-black sky outside. This is the result! It almost looks as if something has swooped by and it climbing into the sky.