1977 Map of Castle Rock

About this map

Castle Rock rises as the dominant landmark of this Butte County landscape, anchoring a wide expanse of prairie drainage systems. The terrain is defined by an intricate network of seasonal waterways, including Frog Creek, Buck Pasture Creek, and the various forks of Willow Creek, which converge as they flow through the open range. This 1970s survey captures a transition point in the local geography, where isolated ranching outposts like Schummer sit far from the primary roads. A solitary Radio Tower near the northern boundary serves as a modern navigational marker in an area otherwise characterized by vast stretches of pastureland and subtle elevation changes. The map provides a clear picture of the ranching infrastructure of the era, recording the exact placement of fence lines, small reservoirs, and the unimproved tracks that connect these remote South Dakota homesteads.