Pinnacles, Badlands National Park, South Dakota
The rising sun lights up hundreds of peaks, called the Pinnacles, in Badlands National Park, South Dakota.

Fiery Sunrise, Badlands National Park, South Dakota
A fiery fall sunrise lights up the sky above countless peaks that make up the Badlands in Badlands National Park, South Dakota.

Sunset on the Badlands, South Dakota
The golden light of sunset shines through a narrow crack in an otherwise dreary fall sky to light up the peaks of several large formations in the Badlands of South Dakota.

Sunset, Badlands National Park, South Dakota (Panorama)
The setting sun lights up the sky between two large peaks in Badlands National Park, South Dakota.

Alpenglow, Badlands National Park, South Dakota
The warm light of alpenglow colors the tall peaks of the Badlands, which stand tall over a grassy prairie in Badlands National Park, South Dakota.

Pink Clouds over the Badlands, South Dakota
A band of wispy clouds turns pink at dusk over the Badlands in this view over the White River Valley, Badlands National Park, South Dakota.

Cirrus Clouds over Saddle Pass, Badlands, South Dakota
Several cirrus clouds hover over Saddle Pass in Badlands National Park, South Dakota.

Full Moon over Conata Basin, Badlands, South Dakota
The full moon is visible over the colorful landscape of the Conata Basin in Badlands National Park, South Dakota.

Full Moon Setting over Conata Basin, South Dakota
The full moon begins to set over the Conata Basin in Badlands National Park, South Dakota, as the sun rises and lights up the landscape.

Sunrise over Grasslands, South Dakota
A vibrant fall sunrise lights up the sky above the grasslands near Buffalo Gap in South Dakota.

Cracks, Badlands, South Dakota (Image #1)
The tile-like ground of the Badlands in South Dakota cracks and peels after drying out.

Cracks, Badlands, South Dakota (Image #2)
The relatively hard tile-like ground of the Badlands in South Dakota cracks and fractures in artistic patterns after drying.

Mushroom Pedestal Rock Formations, North Dakota
Several "mushroom pedestal" rock formations dot the landscape in Theodore Roosevelt National Park in North Dakota. The formations are carved by rain and wind.

Black-Tailed Prairie Dogs, Kissing
Two black-tailed prairie dogs (Cynomys ludovicianus) appear to kiss in Badlands National Park in South Dakota. Prairie dogs kiss as a means of identifying other members of their family.

Black-Tailed Prairie Dogs, Kissing, Alternate Image
Two black-tailed prairie dogs (Cynomys ludovicianus) check each other out by appearing to kiss in the Roberts Prairie Dog Town in Badlands National Park, South Dakota. Prairie dogs live as families, and verify membership in those families by kissing.

American Bison Taking a Dirt Bath
An American Bison (Bison bison) gives itself a dirt bath in the Badlands of South Dakota as a pronghorn antelope looks on. American Bison, commonly referred to as buffalo, are the largest terrestrial mammals in North America.

American Bison, Standing, Badlands, South Dakota
A large adult American Bison (Bison bison) stands in an open prairie near Buffalo Gap in Badlands National Park, South Dakota. Bison are the largest terrestrial land mammals in North America. While commonly called buffalo, true buffalo are found only in Africa and Asia.

Coyote, Badlands National Park, South Dakota
A coyote (Canis latrans) patrols an open prairie near Buffalo Gap in Badlands National Park, South Dakota.