Ice-blue in color, warm in temperature and a little larger than a backyard hot tub, the pool is the newest known feature to ...

A bison roams in front of Castle Geyser in the Upper Geyser Basin at Yellowstone National Park, Mont., on Sept. 25, 2023. (AP Photo/Hannah Schoenbaum) A new hydrothermal pool has been discovered in ...

I was sitting on a wooden bench in Yellowstone National Park, overlooking the violently steaming Castle Geyser with two dozen other tourists when my partner, Brian, struck up a conversation. “Do ...

Castle Geyser, Upper Geyser Basin, Yellowstone National Park Cooper Hewitt, Smithsonian Design Museum. Click to open image viewer. CC0 Usage Conditions Apply Click for more information. Click to view ...

Steamboat Geyser emits a small jet of steam in Yellowstone National Park on May 15, 2018. A thermal spring near Old Faithful, it erupted for only the fourth time in 60 years in September 2018, but ...

Castle Geyser Cone, Yellowstone National Park Smithsonian American Art Museum and its Renwick Gallery. Click to open image viewer. CC0 Usage Conditions Apply Click for more information. Click to view ...

Yellowstone was the world's first National Park, established in 1872, and is a geological marvel with the greatest concentration of geysers and hot springs on the planet. The volcanic nature of ...