Drought Exposes 130-Year-Old Shipwreck … in North Dakota Posted bymconiglio10966October 4, 2021October 4, 2021Posted inUncategorized October 3, 2021 The steamboat Abner O’Neal struck a rock and sank in 1892 on the Missouri River while traveling between Washburn and Mandan, north of Bismark, North Dakota. Aerial view of the Abner O’Neal Share this:TwitterFacebookLike this:Like Loading...