An Old Copper Culture ‘III-D’-style Crescent Knife/Ulu (ca. 4000-1000 B.C.E.). Similar to Arctic ulus, these are thought to be food-processing knives; other styles are thought to be ornaments. This one is from Minnesota, and many have been found across the Great Lakes region [980 x 734]
Sources:
•Monette Bebow-Reinhard, UPDATING THE WITTRY TYPOLOGY (Phase XXV dated 3/30/25) •National Museum of the American Indian – 10/1331