The Grand Prismatic Spring, located within Wyoming's Yellowstone National Park, is the largest hot spring in the United States, and the third largest in the world.
Here are photos of the famous rainbow-colored spring.
Streaks of Color
Scientists with the Hayden Geological Survey of 1871 named the spring for its vivid colors, which are the result of pigmented bacteria in the algae mats that surround the spring.
The colorful Grand Prismatic Spring measures more than 300 feet (91 meters) across, and is approximately 160 feet (49 meters) deep.
The Grand Prismatic Spring discharges an estimated 560 gallons (2,100 liters) of water each minute.
Water in the Grand Prismatic is an average of 160 degrees Fahrenheit (70 degrees Celsius).
A Sight to See
The hot spring is a popular tourist destination in Yellowstone National Park.
Kaleidescope of Colors
Bacteria creates shades of red, orange, yellow and green around the mineral-rich water.
The Grand Prismatic's colorful algae mat makes it one of the most photogenic sites within Yellowstone National Park.