Grand Prismatic is the largest hot spring in the United States. Approximately 250 × 300 feet (80 × 90m) around and 160 feet (50m) deep, it discharges an estimated 560 gallons (2,100 L) of 160°F (70°C) water per minute.This natural caldron of rainbow color is the result of microbial mats that grow in its mineral-rich water. Bacteria produce colors ranging from green to red depending on the temperature of the water which favors one pigmented bacterium over another. In summer, the mats tend to be orange and red, whereas in the winter the mats are usually dark green.
Thank you Wikipedia for explaining the science of this natural wonder. But no words can describe experiencing Grand Prismatic in person… the heat of wind soaked with steam, a geologic mix of minerals stirred into the air, water sizzling into vapor below your feet and the sounds of amazement as awestruck visitors behold color so vivid even the steam is bright aqua and orange.
Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, Wyoming USA
Shot handheld using Canon 5D Mark II with Canon EF16-35 f/2.8L II USM lens
Focal length 26mm, 1/60 second at f/14, ISO 100
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