Yellowstone National Park sits atop one of Earth’s largest volcanic systems, and right now that system is slowly reshaping the ground. Instruments show that the Yellowstone caldera is inflating into a ...

The bulge first appeared in 1996 and has now returned, but Yellowstone Volcano Observatory says there's no cause for alarm.

Yellowstone National Park is known for its awe-inspiring beauty and unique geological features. It is a place where geysers erupt, hot springs bubble, and wildlife roams freely. Beneath its ...