Voir Cities of the Underworld, Season 3 - Episode 13

Beneath the sunny façade of Sydney, Australia lies a dark past. Built on the backs of convicts, gold miners and outlaws, this nation forged its freedom from the depths of the underground. Explore Australia's Alcatraz, the 19th century prison that housed Sydney's most threatening criminals. Travel deep into a complex of natural caves that sheltered a gang of escaped outlaws, and the gold mines that produced both riches and the birth of the worker's movement. Host Don Wildman heads underground with surviving witnesses to uncover the location of a secret WWII chemical weapons stash and gets access to a sordid subterranean fort where soldiers en route to the battlefields of Vietnam were trained to resist torture.