Photographer's Note

Today I would like to share with you more colourful photo as compared to my previous posts. In fact this place is one of the most colourful that I have ever seen, very well known Grand Prismatic Spring in Yellowstone National Park.

The Grand Prismatic Spring in Yellowstone National Park is the largest hot spring in the United States, and the third largest in the world, after Frying Pan Lake in New Zealand and Boiling Lake in Dominica. It is located in the Midway Geyser Basin, Yellowstone.

In 1871, Grand Prismatic Spring was discovered and named by the Hayden Expedition for its striking coloration (Prismatic = spectral colours).

More info to colours:

A hot spring, the most common hydrothermal feature of Yellowstone, is an area where heated water can easily rise through cracks and fractures in the earth’s surface. The movement of water is not blocked by mineral deposits. Very hot water cools as it reaches the surface, sinks, and is replaced by hotter water from beneath. This circulation of water is fairly continuous and does not result in geyser eruptions. At Grand Prismatic Springs, siliceous sinter is precipitated from the silica-rich water and is deposited along the edge of the pool. This is represented by the WHITE mineral deposits furthest from the colorful edge of the hot spring.

The breathtaking colors are attributed to the various species of thermophilic bacteria living in the spring. The BLUE water in the center is very hot, but it may support chemotrophic life – a chemotroph is an organism that uses chemicals for a source of energy. As you move farther from the heat source of the spring, life begins to flourish. The cyanobacteria – aquatic photosynthesizing bacteria - that live at the edges of Grand Prismatic Spring cover the color spectrum including YELLOW, GREEN, ORANGE, RED, and BROWN.

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Additional Photos by Zuzana Stefkova (Zuzana_Stefkova) Silver Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 40 W: 10 N: 120] (997)
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