This is an image of one of the more bizarre ice phenomena that I have come across in nature. Perhaps this is something rather common, but it is the one and only time that I have come across it.
While out hiking one frozen, frosted morning I decided to see if the seasonal stream that runs near my house had frozen. It had, but in a way that I had never imagined.
During the night, as the barely moving stream sat in the deepening cold, it began to freeze, and it froze into raised crystalline, geometric shapes with angled sides. I don’t know the how or the why of it, but I captured it with my camera all the same.
The lighting is natural, as is the color. The sun was beginning to rise, and while it was not hitting the ice directly, it colored the sky, which was reflected by the ice.
I used a 200mm lens, and crouched down nearby to get the closeness and angle that you see.
The second picture was taken at the same time, but at 116mm. Aperture was wide open for both at f/4.0. Shutter speed was rather slow 1/30. I used a tripod in this case to eliminate shake.
If you’d like to see another example of math in nature, check out these photographs of natural cauliflower fractals