Diagram of interior of a grain storage pit from Cahokia Mounds, Mississippian culture
||Schematic diagram of bell-shaped storage pit and arrangement of food used by the Hidatsa.
Illinois State Museum-SAE-433 from Wilson, G.L. 1917. Agriculture of the Hidatsa Indians: An Indian Interpretation. University of Minnesota Studies in the Social Sciences, No. 9. Fig. 25, p.87 (from a sketch by Goodbird)