About 400 feet of boardwalk in the Back Basin of Norris Geyser Basin is being rebuilt. This will restrict access to Minute, Monarch and Fearless geysers for about a month.

Norris Geyser Basin is one of the only major thermal basins located outside of Yellowstone Caldera (it is about 2.5 miles north of the caldera rim) and covers an area of about 800 acres.

Named for Philetus Norris, who served as Yellowstone National Park superintendent from 1877 to 1882, Norris Geyser Basin is Yellowstone's hottest and most-changing geyser basin.

Norris Geyser Basin also hosts several craters that reach up to 100 meters (328 feet) in diameter. These craters were formed during hydrothermal explosions that ejected boiling water, mud and rocks.

At 150,000 years old, Norris Geyser Basin is Yellowstone's hottest and oldest geothermal area. It's home to the tallest geyser in the world, Steamboat, which sprays hot water over 300ft / 90m into ...

Norris Geyser Basin is a vast sprawl of steaming pools and spraying geysers, where 200-degree water explodes out of the earth on a regular basis.

Yellowstone’s Norris Geyser Basin remains the oldest and most active thermal area in the park, containing more than 10,000 geothermal features. The park’s geothermal activity is driven by a ...

There’s a new milky blue pool in Yellowstone National Park. Yellowstone geologists discovered the baby hydrothermal feature in April while doing routine work at Norris Geyser Basin, the park’s ...

CODY — On Monday afternoon, the U.S. Geological Survey announced the discovery of a new geothermal pool in Yellowstone National Park’s Norris Geyser Basin. Michael Poland, Ph.D., the scientist ...