Beautiful Rushmore Cave 13622 Highway 40 Keystone, SD 57751 Keystone, SD Archaeology Triple R Ranch Highway 16A Keystone, SD 57751-0124 Keystone, SD Ranches National Presidential Wax Museum 609 Highway 16A Keystone, SD 57751 Keystone, SD Museums Mount Rushmore/National Park Service Keystone, SD Landmarks Big Thunder Gold Mine 604 Blair Avenue Keystone, SD 57751 Keystone, SD Museums