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Keystone, South Dakota, USA

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Rushmore Cave  
13622 Highway 40
Keystone, SD 57751

Discovered by placer miners in 1876 and opened to the public in 1927, Rushmore Cave in the Black Hills is the 2nd largest cave system in the United States. Containing "the legendary big room," icicle-like stalactites, fossils, massive flowstones and spires of stalagmites, Rushmore Cave began forming 60 million years ago. Open May through October, guided tours last about one hour.

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Keystone Area Attractions

Holy Terror Mini-Golf
Borglum Historical Center
Keystone Historical School and Museum
National Presidential Wax Museum
President's Alpine Slide
Big Thunder Gold Mine
Rushmore Cave
Mount Rushmore National Memorial


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