I've mentioned elsewhere that the windows of a aeroplane can get iced-up at high latitudes, which can interfere with enjoyment of the view, especially if the sun shines on the ice, lighting it up. However, just this once, flying from Seoul, Korea, to London across Mongolia and Russia near the Arctic Circle, the ice itself is the view of interest.
Usually the ice on the window looks pretty boring and ugly, like this (excuse the dirty plane):
However, on this flight the ice crystals arranged themselves in a pattern that took the form of a beautiful little tree with a flock of birds around it, which caught the sunlight and glowed brightly against the blue-sky background. Here it is:
Here is a close-up of the 'crown':
Isn't that just beautiful?
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