rockcreek: Pumpdrill bits
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rockcreek: Stone knapping
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rockcreek: Pumpdrill, boring holes in rock
rockcreek: Deer jaw rasp
rockcreek: Palisades Museum of Prehistory
rockcreek: Primitive technology workshop
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rockcreek: Primitive humor
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rockcreek: Stone tools @ Palisades Museum of Prehistory
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rockcreek: Stone knapping
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rockcreek: Primitive technology workshop