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Grand Prismatic Spring Runoff N°1

The Grand Prismatic Spring in Yellowstone National Park is the largest hot spring in the United States.

 

It was noted by geologists working in the Hayden Geological Survey of 1871, and named by them for its striking coloration. Its colors match the rainbow dispersion of white light by an optical prism: red, orange, yellow, green, and blue. The vivid colors in the spring are the result of pigmented bacteria in the microbial mats that grow around the edges of the mineral-rich water. The bacteria produce colors ranging from green to red. In the summer, the mats tend to be orange and red, whereas in the winter the mats are usually dark green. The deep blue color of the water in the center of the pool is particularly intense because of the high purity and depth of the water in the middle of the spring.

(source: Wikipedia)

 

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☛ Explored June 19, 2015 #42

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Uploaded on June 19, 2015
Taken on May 28, 2014