Yellowstone National Park is filled with sights and sounds that are surreal. Some of the deep pools have water that is a shade of blue that seems impossible. At the edge of this pool the slow, scalding runoff stained the gravel yellow with sulfer while in a cooler area to the sides an alge thrived that colored everything orange. The result is a natural image that seems more of an abstract than anything that could be the result of a natural process.
