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

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.

Yellowstone National Park geologists were surprised during a routine maintenance check. While inspecting temperature monitoring stations at Norris Geyser Basin, scientists discovered a brand-new ...

Get ready for a little Christmas in July: There’s a new baby blue pool in Yellowstone National Park, and science suggests it started forming on the winter holiday.

Most people view Blue Pool from a viewpoint overhead, though a short path leads down to the water. Hikers can get to the pool on a 2.1-mile hike from the Tamolitch Blue Pool Trailhead or a 3.3 ...