Design Theory Analysis of Biface Technology at the Botanie Lake Dam Site (EcRj 15), South-Central British Columbia

A design analysis is applied to six bifacial tools recovered from the Botanie Lake Dam site (EcRj 15) on the Plateau of southern British Columbia. While these artifacts, selected from the lithic assemblage of this late pre-contact period mat lodge campsite, show some internal variation, they share important characteristics indicative of their use by Plateau peoples. Acute edge angles and less durable raw material suggests that these bifacial tools were used to cut relatively soft contact materials such as herbaceous plants. Their lengthy use lives and multifunctionality make them effective solutions for the requirements of plant and animal processing during a mobile seasonal round. This application of design theory to a small sample of lithic artifacts from a seasonal camp site with an hypothesized focus on root resource harvesting and processing adds to the growing number of studies employing this approach to lithic analysis.