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Morning Glory, Yellowstone

Morning Glory Spring is a relatively small-sized spring with a great range of colors. Due to human activity, however, the color has faded in recent years. The main contributing factor is the coins visitors throw in, which decreases the temperature of the pool. Altering the optimal temperature at which those cyanobacteria lives in, the spring has completely lost the blue core.

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Uploaded on April 28, 2016
Taken on September 6, 2014