Throughout the bitter days of the Warsaw Ghetto, a clandestine group of researchers compiled a vast archive detailing every aspect of life in this prison city built and then obliterated by the Nazis. Led by a historian, Emanuel Ringelblum, the group then buried the archive for for future generations.

Producer: Mark Burman BBC | Presenter: Monica Whitlock

27 Jan 2013,  BBC World Service / 50 minutes  |  BBC News Magazine