Keystone
In Black Hills, Badlands & Lakes Region, Keystone lies on Hwy 40 just off US 16 south of Rapid City, near Mount Rushmore National Memorial in Pennington County. Numerous ghost towns are near by.
In Black Hills, Badlands & Lakes Region, Keystone lies on Hwy 40 just off US 16 south of Rapid City, near Mount Rushmore National Memorial in Pennington County. Numerous ghost towns are near by.