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| p.1 #9 · Yellowstone- A steaming hot spring |
Thanks SRudy, Cheryl, Hoser and Lazlo.
The vertical lines are mostly trees (thin lodgepole pines).
Because of the backlight, some of the shadows from the trees are noticeable. And the fog filtering through the trees is of varying thickness- causing some trees to look darker than others.
Well, that's my best guess .