Grand Prismatic Spring is the largest hot spring in Yellowstone and the 3rd largest in the world; the first two are in New Zealand. Grand Prismatic discharges an estimated 560 gallons of water per minute.
This spring begins with a deep blue center followed a pale blue. Green algae forms beyond the shallow edge (which can be more easily seen by enlarging the image). Outside the scalloped rim a band of yellow fades into orange followed by red which marks the outer border. The entire spring is often shrouded in steam which actually reflects the beautiful colors.
Page Scores range from 0% to 100%. The higher the score, the higher the perceived quality of the image. Score is not a simple average of votes, but takes into account the number of votes and the power of the voters.
For every object, a hit is registered each time the object's main page is viewed. A user's hits are the sum of all the hits on the objects he or she owns.