BOTTOM VIEW OF LARGE sandstone grinding stone. Notice the hole worn through in the center. There are also at least 15 shallow holes located around the edges that may have been used for the manufacture of plummets or maybe just cracking nuts. Since there is no obvious red ochre staining on this side it may not have been used to grind hematite. This surface may have been used to process other materials such as seeds or nuts. The general shape of this side is slightly concave. |