Hand-carved arrowheads and jagged spears made of obsidian, a sharp rock formed by volcanic magma, are remnants of vast ...
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Knewz on MSNOur Ancestors Crafted Hand Axes From Cold Lava, Tool Factory Unearthed in Ethiopia Depicts Their AdvancementThe tools were made from cooled-down lava called ... obsidian was used for cutting tools and weapons, like blades and ...
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