Grand Prismatic Spring
Within the rainbow of orange, brown, and red colors, microorganisms called thermophiles live in communities of thick mats. These microbes contain colorful pigments that allow them to make energy from sunlight and thrive in the harsh conditions of hot springs.
The Grand Prismatic Spring in Yellowstone National Park is the largest hot spring in the United States, and the third largest in the world. It is located in the Midway Geyser Basin.

Grand Prismatic Spring was named for its striking coloration. Its colors include blue, green, yellow, orange, gold, red and brown, and has a rainbow disperson of white light by an optical prism.
Grand Prismatic Boardwalk
Grand Prismatic Boardwalk - Yellowstone NP, WY
Grand Prismatic - Pano
Grand Prismatic Pano - Yellowstone NP, WY
Grand Prismatic from Above
Grand Prismatic from Above - Yellowstone NP, WY
Grand Prismatic Boardwalk
Grand Prismatic Boardwalk - Yellowstone NP, WY
Grand Prismatic Spring
Within the rainbow of orange, brown, and red colors, microorganisms called thermophiles live in communities of thick mats. These microbes contain colorful pigments that allow them to make energy from sunlight and thrive in the harsh conditions of hot springs.
Grand Prismatic Spring
Within the rainbow of orange, brown, and red colors, microorganisms called thermophiles live in communities of thick mats. These microbes contain colorful pigments that allow them to make energy from sunlight and thrive in the harsh conditions of hot springs.
Grand Prismatic Spring
Within the rainbow of orange, brown, and red colors, microorganisms called thermophiles live in communities of thick mats. These microbes contain colorful pigments that allow them to make energy from sunlight and thrive in the harsh conditions of hot springs.
See photo in original gallery.