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View looking south at the water system that was located on the north side of the mound (= #7 on labeled model) — just outside the Israelite city gates.
The stair case in the upper right portion of the image leads down from the outer gate complex (#1b) to the area where a water reservoir was located (the parched area in the bottom half of the image.
For another view of this complex Click Here.
For a brief description of Israelite Megiddo and a map Click Here.