Eight miles south of Jerusalem, where the last stunted olive trees and stony cornfields fade into the naked badlands of the Judaean desert, a hill rises abruptly, a steep cone sliced off at the top like a small volcano. This is Herodium, one of the grand architectural creations of Herod the Great, King of Judaea, who raised a low knoll into a towering memorial of snowy stonework and surrounded it with pleasure palaces, splashing pools, and terraced gardens.

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