Although fortifications were built here by the Maccabees in the second century b.c. , King Herod the Great improved on these hugely, transforming them into a magnificent fortified palace, stocked with years' store of food and fitted with enormous cisterns (supplied by flash floods via an aqueduct) to ensure a plentiful water supply.
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King Herod the Great built an aqueduct that filled cisterns.
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There were no aqueducts to fill up the cisterns.