(Prospector) S. of Rapid City, Pennington County, SD. Mt. Rushmore Rd. S. 0.3 miles from jct with Catron Blvd, W. on Skyline Dr. 100’, S. on Service Rd. 50’ to the mural on the W. side of the road. (N44 00.854 W103 15.099) Photo by Mark Comstock 7-21-24.