Rushmore Cave is a subterranean cave in the Black Hills of South Dakota. To access it, one must gain admission to Rush Mountain Adventure Park, a theme park featuring roller coasters and other rides. The cave tour takes one hour and requires the ability to climb up and down stairs and to stoop under low ceilings.

The limestone caves have beautiful natural formations such as stalactites, stalagmites, columns, and flowstone, and there are many rooms to be explored during the tour. The cave was discovered in 1876, when a chute carrying water to a mine overflowed into a small hole. The miners explored it and an entrance was formed.

Address: Rushmore Cave, 13662 Highway 40, Keystone, SD 57751, Phone: 605-255-4384

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