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180,533,300 dunams is about 2,000,000 times as big as Alcatraz.
In other words, the size of Alcatraz is 0.000000500 times that amount.
(a.k.a. The Rock) (California)
Alcatraz Island measures 89 dunams. It is known a part of the Golden Gate National Recreation Area, and has historically served as a lighthouse, fort, military prison, and — most famously — a federal prison.
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