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.

CODY — The U.S. Geological Survey last week announced the discovery of a new geothermal pool in Yellowstone National Park’s Norris Geyser Basin. Michael Poland, PhD, the scientist in charge of ...

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 ...

YELLOWSTONE NATIONAL PARK — Portions of the Norris Geyser Basin that were closed since July 23 because of increased geothermal activity are scheduled to reopen at 8 a.m. today.

Yellowstone geologists find a 13-foot-wide milky blue pool near Tree Island in Norris Geyser Basin, likely formed by small hydrothermal explosions on Christmas.

Two subbasins of Norris Geyser Basin, Porcelain and Back Basins, are open to the public, with trails and boardwalks that meander through iconic features like the tallest active geyser in the world ...

Yellowstone geologists find a 13-foot-wide milky blue pool near Tree Island in Norris Geyser Basin, likely formed by small hydrothermal explosions on Christmas.

Yellowstone geologists find a 13-foot-wide milky blue pool near Tree Island in Norris Geyser Basin, likely formed by small hydrothermal explosions on Christmas.