A deeply worn grinding stone excavated from Level 5, Unit 130W 28S, Mound 138, Kuulo Kataa. Mound 138 is a low mound covering roughly 300 m2. Mound 138 deposits included slag and a burned feature (Unit 130W 30S) which was probably related to processing metals. These associations suggest that the grinding stone in unit 130W 28S may have been used in metalworking activities. Photo scale in 5 cm intervals. Kuulo Kataa, 1995.