July 21, 2013 by urbexcentral Cockatoo Island 3 – Gaol + Fort The islands prison, and the garrison to guard them were a readily available source of workers for the islands shipyard and to quarry the sandstone of which the island is comprised. Share this: Click to share on X (Opens in new window) X Click to share on Facebook (Opens in new window) Facebook Click to share on Reddit (Opens in new window) Reddit Like Loading... Related