Virtual Guidebook to Yellowstone and Grand Teton National Parks
The Midway Geyser Basin
Yellowstone National Park, Wyoming
The Excelsior Geyser Crater, another case of self destuction. The Great Prismatic Pool, amazing colors governed by water temperatures.
Hot water spills into the Firehole River at Midway Geyser Basin.

Next: Upper Geyser Basin

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