A military structure located near Ellsworth Air Force Base in Meade County, South Dakota, United States. The coordinates place it within a region known for significant Cold War-era military infrastructure associated with the U.S. Air Force's strategic bomber and missile operations.
The specific function, construction date, and historical details of this particular site are not confirmed by the provided search results. The area's military history is tied to national defense installations from the mid-20th century onward.