Small cast copper-alloy ornaments are made across West Africa within the arc of the great Niger River. Brass or bronze casting has powerful associations with the supernatural because, like ironworking, it is a highly specialized process that uses fire to transform a raw material into a form that is useful and meaningful to humans. For the Senufo, copper-alloy ornaments are pleasing to the eye and offer protection by representing and honoring nature spirits. [See also 2007.600-01].