Revealed: Syria's torture centres and their facility commanders

Human Rights Watch has mapped 27 Syrian detention centres where torture is alleged to have taken place. The locations are taken from the testimonies of more than 200 individuals who either witnessed or suffered torture. Details of the agencies, commanders and methods involved are also shown. You can find more information about the revelations here, including video interviews with torture victims. Zoom in to view individual sites and select a marker to read further details. Click here to download data including witness testimonies, the locations of detention centres and the details of their commanding officers.

• Who made this visualisation? Human Rights Watch

• Where can I find it? Here

• More data journalism and data visualisations from the Guardian