The cave was discovered in 1876 by a gold prospector named Isaac A. Bowers.
It is a 'solutional' cave, formed primarily by the dissolution of limestone by groundwater.
Unlike many other caves in the region, Rushmore Cave is known for having a higher density of boxwork and flowstone formations.
The cave temperature remains constant at 58 degrees Fahrenheit regardless of the external weather.
The adventure park surrounding the cave includes a mountain coaster that utilizes the natural topography of the Black Hills.
Rushmore Cave is a solutional cave located within the Rushmore Mountain Adventure Park in Keystone, South Dakota. It offers guided stalactite cave tours that explore underground geological formations. The site features the Soaring Eagle Zipline Ride, which provides a high-altitude view of the surrounding Black Hills landscape. Additional onsite activities include a mountain coaster and various thrill-based amusement rides. The facility is situated at an elevation that keeps the cave temperature at a consistent 58 degrees Fahrenheit year-round. It serves as a combined subterranean and surface recreation park. Visitors access the cave through a maintained portal located on the park grounds.
The viewing platform at the top of the Soaring Eagle Zipline provides the best panoramic shots of the Black Hills.
Wear a light jacket or long-sleeved shirt for the cave tour, as it remains cool even during hot summer days.
Purchase a combo pass if you plan to do both the cave tour and the outdoor amusement rides to save on individual costs.
Wear closed-toe shoes with good grip for navigating the natural stone pathways inside the cave.
Do not wait until late afternoon to arrive, as the guided cave tours may sell out early during peak summer months.
The park operates seasonally, typically opening in the spring and closing in late autumn; it is closed during the winter months.
Do not touch the cave formations, as oils from human skin can permanently damage the mineral structures.
