Overview
The Treblinka area, northeast Poland, contained a cluster of camps during the Second World War, including sites now identified as T1 (Arbeitslager/quarry), TII (Judenlager), TIII (alleged extermination camp), and Kosów Podlaski/Kosów Lascki. Postwar reconstructions and memorialization have consolidated some of these sites under the label “Treblinka II”, but historical testimony and local knowledge suggest a more dispersed network.
Camp Sites and Layout
The current TII was adjacent to the Malkinia-Siedlce trunk line. The above description aligns with Yankel Wierniks first map.Yad Vashem says: Treblinka Extermination Camp, in the northeastern part of the Generalgouvernement Located 2.5 miles from the train station of Malkinia on the main line running from Warsaw to Bialystok.
Encyclopedia of the Holocaust, says:
This camp called Treblinka is also put adjacent to the Warsaw -Bialystok trunk line not the Malkinia-Siedlce line as the current TII is. The line no longer exists. TII is trapezoid not rectangular. Perhaps they were viewing Wierniks first map?“[Treblinka] was situated in a sparsely populated area near Malkinia, a railway station on the main Warsaw-Białystok line; the camp’s precise location was 2.5 miles (4 km) north west of the village and railway stop of Treblinka. The site selected was heavily wooded and well hidden from view. The camp was laid out in a rectangle 1,312 feet wide by 1,968 feet long (400 x 600 m),
Josef Hirtreiter
It was the judiciary who claimed that this man worked at Treblinka alleged extermination camp. He was effectively silenced.(1 February 1909 – 27 November 1978) was an SS functionary of Nazi Germany, Hirtreiter was arrested by the U.S. military in July 1946 for having served at Hadamar Euthanasia Centre. American officials were unable to pin anything on Hirtreiter regarding Hadamar, but he did confess to working at a camp called Malkinia. link
T1 – Quarry (Arbeitslager)
Functioned primarily as a labor camp for non-Jewish civilians.
Witnesses such as Marion Oszuk worked there and regularly passed TII, describing it merely as a Judenlager with bartering, seeing nothing untoward.
Spatially separated from other camps, consistent with forced-labor operations.
TII – Judenlager
Rectangular layout: approximately 400 × 600 meters, as noted in historical sources (Encyclopedia of the Holocaust).
Located northeast of Wólka Ograglik, roughly 4 km from Treblinka railway station.
Witnesses such as Eli Rosenberg reported trains stopping at Małkinia station, with wagons detached via sidings leading to the camp.The location of TII monument is 1.2 km north east of the town, Wolka Ograglik.
On 6 November 1945, investigating judge Z Łukaszkiewicz, in the presence of J. Maciejewski, a prosecutor of the District Court in Siedlce, K. Trautsolt, a sworn ground surveyor, witnesses Samuel Rajzman and Henryk Rajchman-Romanowski and Stanisław Kucharek, village leader of Wólka Okrąglik, inspected the site where Treblinka death camp was located, Kosów Lacki municipality, Sokołów Podlaski district.
In the course of the activities, with the witnesses and the village leader consulted for information and explanations, the following facts were established:
The closest village, Wólka Okrąglik, located to the north-east of the camp, is some 1.5 kilometers away, while the distance to the closest railway station, Treblinka, located to the north-west, is around 4 kilometers.
The site of the current TII is not a side track from the Malkinia railways station but on the Malkinia-Siedlce trunk line. The side track to TII was from Treblinka railway station to the Arbeitslager and Judenlagers.Eli Rosenberg eye witness said: I, Eli Rozenberg, born in 1924 in Warsaw, at 25 Gęsia Street. My father was murdered by the Germans in 1940. In August 1942, I was deported from the ghetto to Treblinka along with the rest of my family, we were packed 100 to a wagon. When the train stopped, it was already dawn I saw the Małkinia station through the little barred window, at that moment the Germans started detaching groups of 15 wagons that went on a special side-track leading to the camp, and when the wagons stopped, they started shouting raus, raus.
Functioned as the primary site for housing Jewish prisoners for labor, rather than an alleged extermination facility.
TIII – Alleged Extermination Camp869. 3030 Treblinka I
870. 3031 Treblinka I
http://www.deutschland-ein-denkmal.de/ (no longer active)
Identified in some historical reports and intelligence documents (Polish Army General Grot Rowecki) at Czerwony Bór, approximately 39 km north of Małkinia.
Postwar records list it as a smaller, operationally distinct camp, potentially intended for mass killings, though precise activities remain classified as alleged killing zones."The Treblinka-III camp was listed as "the death camp" for the Jews and was reported to be located at Czerwony Bor. As late as in 1944, its existence was also mentioned in the renowned wartime publication Ghetto Speaks published in New York (Encl. 6). The remote Czerwony Bor (Red Forest) was (and is) located forty kilometers north of the Treblinka-I and Treblinka-II camps. Additional documents regarding Treblinka-III are available from the Polish Historical Society in the USA (tel. 203--325--1079) and archives of the Polish Underground Study Trust in London (tel. 011-4481-992-6057)."

Image : US intelligence report
Kosów Podlaski/Kosów Lascki
Recognized in U.S. intelligence reports as a camp southeast of Ograklik.
Elders from the area also place an alleged extermination camp here, reflecting regional dispersion of facilities.
Observations from Maps and Testimonies

Image : US Intelligence report
Wiernik’s First Map (1943)
Rectangular layout, placed near the Warsaw–Białystok railway line, likely corresponding to Małkinia-area camp, possibly TII or a labor-adjacent facility.
Demonstrates internal road and structure organization, but geographic placement differs from the modern TII site.

Wierniks first TII map showing camp adjacent to the Warsaw-Bialystok trunk line
Wiernik’s Later Map (1945)
Adjusted to align with postwar assumptions of Treblinka II near the Siedlce line.
Internal layout preserved, but geographic orientation shifted, reflecting reconciliation with external expectations.
Official Survey Maps
Modern trapezoidal TII site south of Treblinka township, northeast of Ograk.
North is misoriented 90°, pointing east, a notable cartographic error.
Distances from Wólka Ograglik and Treblinka station were formally recorded in postwar inspections (Łukaszkiewicz, 1945).

Official survey map of TII with wrong orientation.
Railway and Transport Patterns
Transports stopped at Małkinia station, where prisoners were sorted and divided among labor and housing camps.
Sidings led directly to camp sites; groups of wagons detached for specific destinations.
Circular routes from Siedlce distributed prisoners to multiple Judenlager and alleged killing zones, complicating geographic identification.

Comparison of Malkinia camp image with Wierniks first map
Conclusion
The Treblinka region consisted of multiple interrelated sites: labor camps, housing camps for Jewish prisoners, and alleged killing zones. Postwar memorials and surveys consolidated some of these sites under the designation Treblinka II, but eyewitness testimony, local memory, and historical intelligence indicate a more complex and dispersed network.
Accordingly, claims that the current TII site represents the sole location of mass extermination should be treated with caution; alleged killings likely occurred at multiple alleged sites throughout the region if they happened at all.