(SD-51-05) in Rapid City, Pennington County, SD. Catron Blvd W. 1.5 miles from jct with US16 on the S. side of Rapid City, N. on Sheridan Lake Rd. 0.2 miles, E. (curves N.) on Summerset Dr. 0.25 miles, W. on Springtree Ct. 250' to the house on the S. side of the road at 4935. (N44 02.110 W103 16.133) Photo by Mark Comstock 7-21-24.