NORTH DAKOTA STATE UNIVERSITY - FARGO, N D SLUMP AT ABERCROMBIE, N.D. Click on the photo for an enlarged image. (89K) Slumping threatens the Fort Abercrombie Historic Site on the Red River of the North, just east of Abercrombie, North Dakota. The river passes through a broad meander here, with cutbank erosion helping to induce bank instability. As is common, this slump terminates in an earthflow-like form. (Photo by D.P. Schwert, North Dakota State University, 1999). [ Mass Wasting Features of North Dakota ]