View Larger Map
The Grand Prismatic Spring is nearby Old Faithful Geyser in Yellowstone National Park. It is the largest and most colourful spring in the world, and can be seen from space. The steam it gives off is tremendous, visible, and has a very unpleasant odor. Scientist say that if the Grand Prismatic becomes larger or hotter, it could be sign that Yellowstone’s volcano could erupt.