Stone grinding tool (mano) and metate fragment, Native American prehistoric artifact

This appears to be a Native American grinding stone set consisting of a mano (hand-held grinding stone) and a metate fragment (grinding surface). These tools were essential implements used by indigenous peoples across North America for thousands of years, primarily for processing corn, seeds, nuts, and other plant materials into flour or meal. The worn, smooth surfaces indicate extensive use over time, reflecting the daily life and subsistence practices of prehistoric communities. Grinding stones like these are highly valued by collectors of Native American artifacts and archaeological enthusiasts for their direct connection to ancient daily life and survival practices. They represent some of the most fundamental tools in human history and provide tangible evidence of food preparation techniques that sustained indigenous populations for millennia. Such artifacts are particularly appealing to those interested in prehistoric technology, anthropology, and the material culture of early American civilizations.