Behind many of the displays at Tuol Sleng is the Documentation Center of Cambodia . DC-Cam was established in 1995 through Yale University’s Cambodian Genocide Program to research and document the crimes of the Khmer Rouge. It became an independent organisation in 1997 and researchers have spent years translating confessions and paperwork from Tuol Sleng, mapping mass graves, and preserving evidence of Khmer Rouge crimes.
