Archaeologist Richard Osgood discusses the excavation of an 18th century convict graveyard on Rat Island and the effort to identify the skeletons found there.

Who were these people? Were they Dutch, French, Spanish or even American prisoners of war who were captured and then died of disease?

Or were they convicts, kept imprisoned in hellish conditions on floating 'hulks', cramped and filthy decommissioned warships, while awaiting transportation to Australia?

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