Pahasapa Limestone Outcrop Belt

Sharing the common bonds of their origin, each is unique in its own way. Located in a band of limestone rock called the “pahasapa limestone”, the caves encircle the central granite core of the Black Hills. This limestone was created during the Mississippian Period, approximately 360 to 330 million years ago on the bottom of an ancient sea.

Copyright © 2018 Rush Mountain Adventure Park & Rushmore Cave. All Rights Reserved.