• Mount Rushmore, Washington, Jefferson, T. Roosevelt, Lincoln framed by ponderosa pine trees under a bright blue sky.

    Mount Rushmore

    National Memorial South Dakota

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  • No sculpture illumination October 6, 7 and 8, 2014

    Due to replacement of the lighting system, the sculpture will not be illuminated on October 6, 7 and 8, 2014. The mountain will be illuminated for 30 minutes, beginning 1/2 hour after sunset, October 1- 5, and will resume nightly on October 9, 2014.

Cave / Karst Systems

Boxwork, a calcite formation common in Wind Cave.

Boxwork, a calcite formation common in Wind Cave.

NPS Photo

Mount Rushmore National Memorial is located in the granite core of the Black Hills. While there are no caves located within the memorial, numerous caves can be found in a ring of limestone that is exposed around the edge of the Black Hills. This limestone layer was laid down at the bottom of a shallow sea that covered the area around 350 million years ago.

Two of these cave are National Park Service sites, Wind Cave National Park and Jewel Cave National Monument. Visit their websites to learn more about the formation of each of these caves and which special features they contain.

 
Nailhead spar calcite crystals and dripstone formations in Jewel Cave.

Nailhead spar calcite crystals and dripstone formations in Jewel Cave.

NPS Photo by D. Luchsinger

Jewel Cave

Did You Know?

Did You Know?

A committee of the Rapid City Women's Club headed by Mrs. C.C. Warren and Mrs. Gutzon Borglum created this 39ft by 67ft flag for the dedication of the Washington figure on July 4, 1930. This flag was later used by Gutzon Borglum to dedicate each of the other presidents.