Hot Springs
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The Hot Springs in Yellowstone National Park in the United States brings in thousands of visitors every year.
Yellow is a common colour of the hot springs algae which will grow in temperatures of 35-59 degrees celcius.
Also known as hot water algae, Cyanobacteria forms here in three main colours namely green, black and yellow.
The hot springs in the Yellowstone National Park which spans across Idaho, Montana, and Wyoming in the USA.
