|'Iipay Aa Name||hapiichaa|
A whole hand-held grinding stone, also known as a mano in Southern California archaeology. This bifacial stone is used with one hand for grinding and was shaped in construction; it is shouldered by usewear. It is square in shape. The stone material is sandstone with inclusions of garnet, that create a vesicular surface. It is fine grained.
This grinding or milling stone's ventral side is smooth, flattened with striations. Its dorsal side is humped. Striations appearing on the surface suggest that this mano was used in an undulating or back and forth movement. Wear marks on the perimeter sides appear to be squared from grinding. The stone is unpecked, but vesicular due to the natural surface; pecking increases the grinding surface for greater traction. The vesicular surface acts in a similar function.
Length - 4.053", Width - 3.35", Height - 2.106", Weight - 1.688 lbs.
|Provenance||This artifact was found within the local San Diego County region, 1910-1950.|
|Date||Late Prehistoric (1300-800 YA)|
|Culture||Kumeyaay / Diegueño|
|Place of Origin||San Diego County|
|Caption||Mano, sandstone: dorsal view, side A (humped top and squared sides).|