Is 576,300 squares as big as Alcatraz?
It's about 60 times as big as Alcatraz
The size of Alcatraz is about 9,600 squares.
(a.k.a. The Rock) (California)
Alcatraz Island measures 9,600 squares. 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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