Shoshone Dam near the entrance to Yellowstone Park, Wyoming.

Bridge over Yellowstone River above the falls at Yellowstone National Park, Wyoming.

Small geyser cone at Yellowstone National Park, Wyoming.

Camping in the Bighorn Mountains in Wyoming.

Yellowstone National Park is located primarily in Wyoming, but extends into parts of Montana and Idaho. Established as a National Park on March 1, 1872, it was the first national park in the world. It is known for its large variety of wildlife and…

Yellowstone National Park is located primarily in Wyoming, but extends into parts of Montana and Idaho. Established as a National Park on March 1, 1872, it was the first national park in the world. It is known for its large variety of wildlife and…

Black and white photograph of several people at the top of Jupiter Terrace at Yellowstone National Park.

Black and white photograph of a group of seventeen people at Angel's Rest, Yellowstone National Park.

Black and white photograph of terraces from Point Lookout, Yellowstone National Park. A large group of people can be seen standing along one area.

Black and white photograph of terraces at Yellowstone National Park. Taken by Robert Merrill, looking southeast from hill.

Black and white photograph of terraces at Yellowstone National Park. Taken by Robert Merrill, looking south from hill.

Black and white photograph of Jupiter Terrace at Yellowstone National Park. Taken by Robert Merrill from below.