A slightly curved iron disc (SF 09-172). It was found positioned upright among a carefully placed set of objects in what archaeologists interpret as a shrine feature in a metallurgical workshop. A large iron spike (SF 09-174) and an iron bangle (SF 09-173) sat next to it. The disc shows signs of corrosion by rusting. Its function is unknown, though it may be a tool preform. The disc shows signs of corrosion by rusting. Scale in cm. Width: 10.7 cm. Weight: 89.8 g. Site Ngre Kataa. 10 June 2009.