PIERRE, S.D. (AP) — A 19-year-old Michigan man has been fined $1,000 for climbing Mount Rushmore.

The U.S. Attorney's Office in South Dakota said Wednesday that park rangers arrested Zachary Schossau, of South Rockwood, on Sunday. Schossau appeared Monday before a federal magistrate who issued the fine and ordered him to pay a $30 court processing fee.

The U.S. Attorney's Office and the National Park Service caution that climbing the Mount Rushmore National Memorial is illegal and that violations will be prosecuted.

The memorial in the Black Hills of South Dakota features the faces of President George Washington, Thomas Jefferson, Abraham Lincoln and Theodore Roosevelt sculpted into the granite mountain face.