Road to Yellowstone 2007 - dbe
Grand Prismatic Spring (in the Midway Geyser Basin):

Approximately 370 feet in diameter and 121 feet deep, Grand Prismatic Spring is Yellowstone's largest hot spring, and the third largest hot spring on Earth (New Zealand contains the two larger springs).

Grand Prismatic Spring (in the Midway Geyser Basin):

Approximately 370 feet in diameter and 121 feet deep, Grand Prismatic Spring is Yellowstone's largest hot spring, and the third largest hot spring on Earth (New Zealand contains the two larger springs).

YellowstoneMidway Geyser BasinGrand Prismatic SpringHot Springsthermophiles