Wednesday, March 29, 2017
The above picture is a prime example. The blue area at the bottom is actually asphalt paving a trail through one of the local parks. The light brown stuff is sand and dirt that is being deposited by the water flowing over the asphalt. The darker brown sections are the reflection of trees on the surface of that water. The black asphalt is blue because the water is reflecting the sky.
The right place at the right time. When I passed this area ten minutes later the reflections were gone and the swirls were different.