Treblinka was the Nazi extermination camp in occupied Poland that operated mainly from July 1942 to October 1943.
Treblinka II was created as part of Operation Reinhard, the Nazi campaign to murder the Jews of occupied Poland. Most victims were deported there by train and murdered soon after arrival. The camp was designed primarily for mass killing rather than long-term prisoner detention, and only a small number of prisoners were kept alive for forced labor.
On 2 August 1943, prisoners launched an uprising, seized weapons, and escaped through the camp perimeter. The Germans later dismantled the site and attempted to conceal its purpose. Estimates vary, but approximately 870,000 people were murdered at Treblinka II, the overwhelming majority of them Jews.