In April, when Yellowstone National Park geologists made their first visit this year to the Norris Geyser Basin, they ...

A new light blue hot spring has formed in Yellowstone’s Norris Geyser Basin after months of small hydrothermal explosions.

A routine temperature check at the Norris Geyser Basin in Yellowstone National Park led geologists to discover a new blue ...

A surprising discovery at Yellowstone National Park has geologists buzzing! During a routine temperature check at the Norris ...

The blue water spring is about 13 feet in diameter and 1 foot below the rim, USGS said. The water in the pool was measured at 109°F.