Gryphon Park
Yellowstone:

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Yellowstone Thermal Features

To say, "Yellowstone's thermal features are unparalleled" is completely true and yet does not do these wonders justice. I doubt that either photographs or writing could ever properly convey the experience of seeing these marvels firsthand. These geothermal features change constantly; they are a rare occurrence of geology changing visibly on the human timescale. 

Grand Prismatic Spring

I'd seen many great pictures and post cards of Grand Prismatic spring which were all taken from the air. Going to up the feature at Midway Gesyer Basin does not yield an impressive view to either camera or the eye. The spring puts off so much steam, it's hard to see anything beyond a white cloud. However, by hiking on the old fire road behind the basin and scrambling up the hill, a better view can be had. However, the arial view is still more impressive.