This rail was discovered by scientists from the Warsaw University of Technology during archaeological works near the gravel pit in 2016. Signature OП3 83 IV indicates that it was manufactured by Putilov Company in St. Petersburg in 1883.
In the interwar period, a gravel pit belonging to the “Lublin Granite and Gravel Mines” company was opened. A special railway siding was built, and the found rail was probably an element of the system of transporting the spoil to the siding itself.
During the German occupation, the gravel pit was still in operation, however, due to labour shortages, Kreishauptmann (district mayor) of Sokołów Podlaski Ernst Gramss set up a labour camp near the gravel pit. In connection with this, from summer 1941 to July 1944 mainly Polish prisoners of the Penal Labour Camp Treblinka I worked there. The gravel excavated in this place was transported by so-called cradles, i.e. trolleys driving on rails.
The rail has undergone conservation and is presented in front of the Treblinka Museum building.