Yellowstone National Park

Yellowstone National Park

The Lower Falls of the Yellowstone River in Yellowstone National Park

The lower basin of Mammoth Hot Springs in Yellowstone National Park in the 1870s

In 1905, a stagecoach takes tourists past Jupiter Terrace in Mammoth Hot Springs, Yellowstone National Park. 

The buildings of Fort Yellowstone can be seen in the distance.

Tourists drive their car on a dirt road along the Yellowstone River in the early days of Yellowstone National Park

Visitors stand near geysers in Yellowstone Park, Wyoming

In near freezing weather, U.S. President Franklin D. Roosevelt stops to admire the Lower Falls in Yellowstone Canyon,

 on September 26, 1937

A black bear walks among visitors to Yellowstone National Park in this photo, circa 1960

Canary Spring terraces, part of Yellowstone's Mammoth Hot Springs

A bison group in the road, near Frying Pan Spring,

Tourists view the Morning Glory hot spring in the Upper Geyser Basin of Yellowstone National Park

An erupting Old Faithful geyser and the Milky Way crisscross on a clear summer night

A bison jam in Hayden Valley 

The setting moon and an elk, photographed in Mammoth Hot Springs

A lone coyote on Yellowstone Lake

Tourists watch Old Faithful, which erupts on average every 90 minutes, in Yellowstone National Park 

A trumpeter swan takes off from a pond

A bison group on the move at sunrise in Lamar Valley 

A black bear runs across a bridge spanning the Yellowstone River near the Lamar Valley in Yellowstone National Park

Looking down from the brink of the Yellowstone River's Lower Falls

A marten in a tree

Hikers ascend the north side of Electric Peak 

It may appear frozen at first glance, but the Lower Falls in the Grand Canyon of the Yellowstone River flows among the snow and ice

An aerial view of Upper Geyser Basin,

A grizzly bear near Frying Pan Spring, Yellowstone National Park