flint fragments â€' possibly ancient tools. flint was ideal for shaving, cutting, and making weapons

flint stone tool ancient prehistoric weapon cutting shaving hard dark sharp blade edge fragment primitive archaeology artifact handcrafted silica quartz chert rock material raw mineral knapping conchoidal break technique culture age hunting gathering survival craftsmanship history excavation skills knives spear arrowhead scraper toolmaking flintknapping neolithic mesolithic paleolithic resource natural tradition discovery innovation