Bannerstone

A stone presumed to be an Atlatl weight with a drilled centered hole or a grove. The bannerstone could be a ceremonial object and reamins a problematical artifact. Certain bannerstones are so large and elaborate that their design and size totally precludes them from being used effectively as an atlatl weight and thus are considered cerimonial objec......

Bannerstone

Bannerstones are artifacts usually found in the Eastern United States that are characterized by a centered hole in a symmetrically shaped carved or ground stone. The holes are typically ¼” to ¾” in diameter and extend through a raised portion centered in the stone. They usually are bored all the way through but some have been found with hole...
Found on http://en.wikipedia.org/wiki/Bannerstone
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