Ave!
Mano and Metate, Four Corners Area, Matched Pair
The metate is c. 12cm per side, and was used on both sides. The mano is 9cm and worn flat on the bottom, while the top served as a 'rolling' grinder. Dried lichens on the metate.
Due to the small size of both, they were certainly not used for grinding maize or acorns. I'm not educated enough to make a guess for their use.
From the Vada Sandes Collection