It’s not just a river in Yellowstone. I snapped the morning glory below (figure 1) this morning while walking back home from escorting my wife to work.
I was caught, as I think you might have been, by the flower’s brilliant center. In fact, the colors were so saturated and bright that in post I darkened and desaturated almost everything, and darkened shadows and raised the blackpoint.
I was a little disappointed that, despite several attempts at fiddling with the aperture and focus area, I couldn’t get 100 percent of the flower into focus. So, it’s on me that the outer edges of the flower are a little out of focus. Let’s call it bokeh: it’s a feature!
But since I was attracted by the play of light in the first place, I rendered it into B/W, and look at what emerged (figure 2):
I am particularly captivated by the bits of pollen that resemble gold flakes in a miner’s pan: I mined some gold here!
Of course mention of the Firehole and Yellowstone and morning glories inevitably leads to the image in figure 3: Morning Glory Pool in the park’s Upper Geyser Basin.
Now that is a firehole!