"A group of engineers, scholars and craftsmen come together to figure how Egypt's massive obelisks were erected. Using simple tools, ancient workers carved a shaft weighing some 400 tons. Then they chiseled, without a chisel, hieroglyphs along its side. After transporting it down the Nile they set it upright without a fracture line in sight. NOVA puts experts to the challenge to test out various theories about how they accomplished this task."
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