Near-boiling water gurgles down the rocks alongside the Grand Prismatic Spring area, giving life to a rainbow of bacteria and filling the air with thick steam.
Many of the hot springs in Yellowstone are rainbows of blue, yellow, orange, and red bacteria that thrive on the heat and moisture of the near-boiling volcanic waters.
In this panoramic view of Black Sand Basin in Yellowstone National Park, you can get a sense of how the earth and water beneath your feet is literally boiling up due to the underground lava flows of the volcanic crater upon which it is situated.
