United States MGB - Grand Prismatic Spring

2 images 1 contributors

Lewis Kemper

About This Spot

Grand Prismatic Spring is the park’s largest hot spring measuring approximately 370 feet (112.8 m) in diameter and is over 121 feet (37 m) deep. It gets its name from the brilliant colors of the bacterial mats that surround it and the deep blue color of its deep pool. In the bacterial mats are archaebacteria also known as archaea, microorganisms that are similar to bacteria in size and simplicity of structure but radically different in molecular organization. These archaebacteria produce colors from green to red, with everything in between. This is why we get the reds, yellows, orange and greens found in Grand Prismatic Spring.

To really see all the colors of the spring you need to be a distance and have some height above. Currently the park service is working on a new trail that will offer this view, but for the next year or two that area will be inaccessible.

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