Colorful shimmering water source of the magma reservoir from the crater of Grand Prismatic Spring in the nature reserve and UNESCO World Heritage Site in Yellow Stone National Park in Wyoming, USA. In the blue center of the steaming spring, the water is 80 degrees Celsius hot. Mats of cyanobacteria cover the cooler edge of the pool and the floor in the outflow channels, coloring it green, yellow, orange-red and brown. The microorganisms need the heat to live
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