Keystone is a town in the Black Hills region of Pennington County, South Dakota, United States. The population was 240 at the 2020 census. It had its origins in 1883 as a mining town, and has since transformed itself into a resort town, serving the needs of the millions of visitors to the Mount Rushmore National Memorial, which is located just beyond the town limits. Keystone was heavily damaged in the 1972 Black Hills flood.
Business district in Keystone (March 2012)
Rock Sculpture of Mount Rushmore
Mount Rushmore
The National Presidential Wax Museum, a private museum in Keystone
The Black Hills is an isolated mountain range rising from the Great Plains of North America in western South Dakota and extending into Wyoming, United States. Black Elk 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. The name of the mountains in Lakota is Pahá Sápa. The Black Hills are considered a holy site. The hills are so called because of their dark appearance from a distance, as they are covered in evergreen trees.
The Needles, Black Hills
2006 Space Shuttle image of the Black Hills
Gold miners in the Black Hills
Abandoned cabin near Dewey in the southern Black Hills
