Rushmore Express Address: 320 Old Cemetery Rd, Keystone, SD 57751 Phone: (605) 666-4483 Hours: Mon: 9am-5pm Tue: 9am-5pm Wed: 9am-5pm Thu: 9am-5pm Fri: 9am-5pm Auto Body Shops, Hotels & Motels Other Businesses: Powder House Lodge at 24125 Highway 16a, Keystone, SD 57751 Mountain Eagle Outpost LLC at 211 Winter St, Keystone, SD 57751 SUBWAY at 804 Highway 16a, Keystone, SD 57751