Treblinka was one of the three extermination camps created as part of Operation Reinhard. The killing centre at Treblinka opened in 1942 and was dismantled just over a year later in 1943. During this time, over 925,000 Jewish people were killed there, including other ‘non-desirables’. Similar to the other extermination centres, the majority of those deported to Treblinka were executed as soon as they arrived, with a small number kept alive to work in the Sonderkommando. On 2 August 1943, members of the Sonderkommando revolted and over 300 prisoners were able to escape, however most were recaptured and immediately executed.