One Tree Hill, Custer State Park

Custer State Park is a state park and wildlife reserve in the Black Hills of southwestern South Dakota, USA. The park is South Dakota's largest and first state park, named after Lt. Colonel George Armstrong Custer. The area originally started out as sixteen sections, but was later changed into one block of land because of the challenges of the terrain. The park began to grow rapidly in the 1920s and gained new land. During the 1930s the Civilian Conservation Corps built miles of roads, laid out parks and campgrounds, and built three dams that set up a future of water recreation at the park. In 1964 an additional 22,900 acres (93 km²) were added to the park. The park covers an area of over 71,000 acres (287 km²) of hilly terrain and is home to many wild animals.

The park is home to a famous herd of 1500 free roaming bison. Elk, mule deer, white tailed deer, mountain goats, bighorn sheep, pronghorn, mountain lions, and feral burros also inhabit the park. The park is famous for its scenery, its scenic drives (Needles Highway and the wildlife loop), with views of the bison herd and prairie dog towns. This park is easily accessible by road from Rapid City. Other nearby attractions are Wind Cave National Park, Mount Rushmore, Jewel Cave National Monument, Crazy Horse Memorial, and Badlands National Park.

The Black Hills (Pahá Sápa in Lakota, Moʼȯhta-voʼhonáaeva in Cheyenne) are a small, isolated mountain range rising from the Great Plains of North America in western South Dakota and extending into Wyoming, USA. Harney Peak, which rises to 7,244 feet (2,208 m), is the range's highest summit. The Black Hills encompass the Black Hills National Forest and are home to the tallest peaks of continental North America east of the Rockies. The name "Black Hills" is a translation of the Lakota Pahá Sápa. The hills were so-called because of their dark appearance from a distance, as they were covered in trees.

Native Americans have a long history in the Black Hills. After conquering the Cheyenne in 1776, the Lakota took over the territory of the Black Hills, which became central to their culture. In 1868, the U.S. government signed the Fort Laramie Treaty of 1868, exempting the Black Hills from all white settlement forever. However, when European Americans discovered gold there in 1874, as a result of George Armstrong Custer's Black Hills Expedition, erstwhile miners swept into the area in a gold rush. The US government re-assigned the Lakota, against their wishes, to other reservations in western South Dakota. Unlike most of South Dakota, the Black Hills were settled by European Americans primarily from population centers to the west and south of the region, as miners flocked there from earlier gold boom locations in Colorado and Montana.