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Edge-glossed flakes, usually recognised as stone tools with macroscopically visible polish from use, have been documented in parts of Southeast Asia from contexts spanning the past 12,000 years and possibly more than 30,000 years. It has been proposed that the edges of these flakes were polished by cutting, splitting or otherwise processing siliceous and fibrous plants for matting, basketry and bindings, and possibly by the reaping of cereals such as rice. Previous studies of use-wear on edge-glossed flakes in Southeast Asia have suggested several tool functions, including the cutting, splitting and scraping of plants with few or no phytoliths (e.g., Pandanaceae) and highly siliceous plants, with high phytolith content, such as Arecaceae palms (e.g., rattan) and Poaceae grasses (e.g., rice, bamboo and cattail reeds). Our study of the use-wear on 16 edge-glossed flakes from layers spanning the past 18,000 years at Liang Bua, a limestone cave on the Indonesian island of Flores, Indonesia

Liang buaNusa tenggara timurSoutheast asiaGlossed edgesScanning electron microscopyStone toolsUse polishUse wear