Treblinka was an extermination camp built by Nazi Germany in occupied Poland during World War 2. It was located near the village of Treblinka in the modern day north east of Warsaw the camp operated officially between July 1942 and 19 October 1943 as part of Operation Reinhard the most deadly phase of the final solution.
What happened inside of Treblinka
During that time about 700,000 to 900,000 Jews where killed in its gas chambers. More Jews where killed at Treblinka than any other Nazi extermination camp apart from Auschwitz. Managed by the German SS and the eastern European Trawnikis(also known as hiwi cops)
How people died during these times
Between 1941 and 1944 more than half of its 20,000 inmates died from summary executions hunger disease and mistreatment that means in about 3 years 20,000 people died. There wasn't only one Treblinka extermination camp there was two. The second camp was just simply called Treblinka 2.