Mesolithic plant processing unveiled: multiscale use-wear analysis of the ground stone tools from Vlasac (Serbia)

Plants and plant-based foods played a crucial role in human evolution, and the interaction between plants and humans is a highly debated topic in archaeology. Ground stone tools are considered particularly valuable evidence due to their direct involvement in various plant processing tasks. This paper investigates the use of sandstone ground stone tools coming from the site of Vlasac in the Danube Gorges region, used in plant processing tasks, providing clues about the exploitation of vegetal resources during the Mesolithic of the region. Applying a novel approach based on the combination of qualitative and quantitative methods, including optical microscopy, 3D surface texture analysis, and spatial analysis, we explore the use of ground stone tools in plant processing at the site. Our results highlight the existence of a specific plant-food processing technology in the area of the Danube Gorges during the eight millennium cal BC, alongside the familiarity of these Mesolithic foragers with the consumption of wild plants, long before the introduction of agriculture in this region.