How was the Chalcolithic fortress at Mersin designed for defense?

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The Chalcolithic fortress at Mersin was a purposefully planned military structure designed to provide effective communal defense. Its defensive features included:12

Defensive Perimeter: The fortress was situated on a mound with a steeply revetted slope, which was crowned by a continuous defensive wall.1
Fortification Details: The protective wall was pierced by slit windows, allowing for defensive observation and action.12
Controlled Access: The site was entered through a gateway that was specifically protected by flanking towers.12
Garrison Support: The interior of the fortress contained formally arranged, standardized accommodation for the garrison, reflecting an organized approach to military discipline as early as 5200 bce.12