Abstract
The Glenrock Buffalo Jump, 48C0304 is part of a Late Prehistoric period buffalo procurement complex in central Wyoming along the south side of the North Platte River. Operation of the jump required controlled movements of buffalo herds for as far as one to three miles before they were finally stampeded over a bluff 40 feet high. The effective width of the bluff was small and as a result the herd had to be under control during the final stampede as well as the initial drive. Good bone preservation in much of the site allowed recovery of large samples for analysis and in addition large numbers of simple but functional tools were found in context. Marks that reflected a number of butchering operations appeared repeatedly suggesting stylized methods, and from this a model of Late Prehistoric butchering is postulated which needs further testing in other mass butchering contexts.

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