"The discovery emphasizes the dynamic nature of Yellowstone's thermal activity," Yellowstone Volcano Observatory's Mike Poland said.

A 13-foot-wide hot pool formed over the winter in one of Yellowstone’s most active areas, and it could offer new insights into the park's ever-changing geothermal systems.

Yellowstone National Park announced Monday the discovery of a new 13-foot baby blue hot spring. It emerged with little volcanic fanfare in the