Grand Prismatic

Grand Prismatic Spring

The Grand Prismatic Spring is a hot spring in Yellowstone National Park. It gets its name from the wide array of colors displayed in the spring. Bacteria causes the formation of colors as the bacteria reacts to changes in the water temperature.

Grand Prismatic
Grand Prismatic

The Grand Prismatic is located next to Excelsior Geyser/Spring. Excelsior used to be the largest geyser in the world until it exploded creating the crater that forms the spring as it exists now.

Excelsior Spring/Geyser
Excelsior Spring/Geyser

Both the Grand Prismatic and Excelsior feed the Firehole River that flows nearby.

Firehole River
Firehole River

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