The state flag of South Dakota features the great seal on a blazing sun in the center against a field of sky blue. The words "South Dakota" appear above the seal and the official state nickname appears below; "The Mount Rushmore State."
The symbols on the great seal of South Dakota represent the state's commerce, industry, and natural resources. "Under God the People Rule" (South Dakota's state motto) appears at the top of the inner circle, which has a background of sky and hills. In the foreground, a steam ship navigates a river running through agricultural and industrial land. The outer circle of the seal bears the words "State of South Dakota," "Great Seal," and "1889" (the year South Dakota became a state).