The Midway Geyser Basin's Grand Prismatic Spring is the largest hot spring in Yellowstone and one of the largest hot springs in the world. Measuring approximately 370 feet in size and around 121 ...

How the Grand Prismatic Spring Gets Its Kaleidoscopic Colors The beating heart of Yellowstone National Park is without a doubt the Grand Prismatic Spring—the largest hot spring in the U.S.

Grand Prismatic Spring as seen from the Midway Geyser ... You can take a guided tour of Yellowstone, if you would feel more comfortable leaving the driving to someone else. THIS one-day guided ...

On the morning of July 23, 2024, a hydrothermal explosion from Black Diamond Pool in Biscuit Basin sent people running for ...

Home to more than 2.2 million acres, hundreds of geysers and waterfalls, as well as Yellowstone Lake – the largest high-altitude lake in North America – Yellowstone National Park is a bucket ...

An aerial view of the Grand Prismatic Spring in Wyoming, Yellowstone National Park. Hot springs in the park contain minerals and facilitate reactions that may have sparked life. An aerial view of ...

Editor’s Note: This story accompanies the May 2016 issue of National Geographic magazine, devoted entirely to America’s first national park. Find more at natgeo ...