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S-21 (Tuol Sleng) Prison, Cambodia

The most notorious of the 189 known interrogation centers in Cambodia was S-21, housed in a former school and now called Tuol Sleng for the hill on which it stands. Between 14,000 and 17,000 prisoners were detained there, often in primitive brick cells built in former classrooms. Only 12 prisoners are believed to have survived.


  • Lucian Perkins for US Holocaust Memorial Museum
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S-21 Prison

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