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Stonehenge, as most people know it was built within a circular 'henge' earthwork around 2,500- 2400 BC, the henge had already been there for some 500 years. There were earlier structures (of so called 'Bluestone' - rhyolite from West Wales), archaeologists are are unsure exactly how much earlier, the original structure was entirely dismantled. The Bluestones were then set in and around the massive sandstone (sarsen) monument, mimicing its form and geometry. The final phase of building seems to have been aborted, the Y & Z holes around the outside of the Circle, dug around 1700 or so BC; no stones were placed in these holes.

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13y ago

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