National Geographic : 1928 Jul
THE NATIONAL GEOGRAPHIC MAGAZINE Photograph courtesy U. S. Army Engineers A FREAK OF NATURE ON THE UPPER MISSOURI At the Trenton Peninsula, in North Dakota, the river made a sharp curve. The point of land was gradually cut away by the water's action until, a few days after this picture was taken, it was completely severed and the resultant cut-off shortened the course of the river by four or five miles. The photograph was made from the deck of a snagboat. A PRIMITIVE MISSOURI RIVER APARTMENT HOUSE The turf dwellings built by the Mandan Indians are substantial structures and frequently house four or five families. Over a sturdy frame of logs a network of osiers is woven, and this in turn covered with sod, well beaten to make a waterproof roof and walls.