the german jail
how it was found
All about Treblinka
location for treblinka i dont know why you would want to[it stupid] but here
From the beginning Treblinka was split into two parallel camps, Treblinka I and Treblinka II. The German contractors who oversaw the construction of Treblinka I and Treblinka II were the Schoenbronn Company of Leipzig and the Warsaw branch of Schmidt–Munstermann. Between 1942 and 1943 the extermination camp was further redeveloped with a crawler excavator. New gas chambers made of bricks and mortar and mass cremation pyres were also introduced during this time. Additionally, the perimeter was enlarged to provide a buffer zone, thus making it impossible to approach the camp from the outside. The number of trains caused panic among the residents of nearby settlements. They would likely have been killed if caught near the train tracks.