in pictures Yellowstone: The Continuing Story

Yellowstone's landscape is forever shifting in response to natural process. Its essence is change. Water in many violent forms and subtle ways is that instrument of change. Thrust into the sky a superheated column of energy gives us its signature form, the geyser.

Yellowstone National Park, located in the northwestern corner of Wyoming, is the world's first National Park. Established in 1872, it preserves unparalleled geothermal features.