Castle Rock Butte is a summit in Butte County, South Dakota, in the United States. With an elevation of 3,707 feet (1,130 m), Castle Rock Butte is the 235th highest summit in the state of South Dakota.
Map of Castle Rock, CO 80104, USA
Castle Rock was so named on account of its castle-like outline.
References
Castle Rock Butte Wikipedia(Text) CC BY-SA