Kosher story via wikipedia:
Sobibor was a Nazi German extermination camp set up in the Lublin region of occupied Poland as part of Operation Reinhard; the official German name was SS-Sonderkommando Sobibor. Jews, including Jewish Soviet prisoners of war, and possibly Gypsies were transported to Sobibor by rail, and asphyxiated in gas chambers that were fed with the exhaust of a petrol engine. One source states that up to 200,000 people were killed at Sobibor. Thomas Blatt claims that "In the Hagen court proceedings against former Sobibor Nazis, Professor Wolfgang Scheffler, who served as an expert, estimated the total figure of murdered Jews at a minimum of 250,000."
After a successful revolt on October 14, 1943 about half of the 500 prisoners in Sobibor escaped; the camp was closed and planted with trees days afterwards. A memorial and museum are at the site today.
Sobibór is also the name of the village outside which the camp was built, which is now part of Lublin Voivodeship in Poland.
Sobibor Memorial Plaque
A critique of the kosher account:
The official story is that about 20 SS officers and 100-150 assistants, aided by 1000 Jews, forced up to 1,200 Jews at a time into 3 to 6 gas chambers, time after time, day after day, buried the bodies, dug them up again, burned them, then crushed their bones in the special Nazi bone-crushers. And in this way they killed about 300,000 passive, weak, pathetic, bovine Jews in 1942 and 1943.
A Soviet Jew named Alexander Pechersky described the mass murders thusly:
“At first glance, as one entered, it like a normal shower: hot and cold taps for running water, wash basins … as soon as everyone was inside, the doors slammed shut with a loud noise. Out of holes in the ceiling, a heavy, blackish substance poured down in spiral shapes…” [Alexander Pechersky, La rivolta di Sobibor, in Yuri Suhl, Ed essi si ribellarono, Milan, 1969, p. 31.]
According to Pechersky, in order to drown out the pitiful cries of their victims, the fiendish Germans kept a flock of geese at Sobibor which were made to quack very loudly whenever Jews were murdered with the magical, mysterious “blackish substance”
Later these blackish-substance-shower-rooms transmogrified into gas chambers.
According to Poliakov, the murder device was a diesel motor (Léon Poliakov, Bréviare de la Haine, Éditions complexe, Paris, 1986, p. 224); Hilberg changed the diesel motor to a gasoline motor (Hilberg, p. 941.); the Enzyklopaedie des Holocaust declared ex cathedra that the murder weapon was a diesel motor (Enzyklopaedie des Holocaust, p. 1496); the München court seems unsure, or perhaps they have been directed by certain elders to establish a new version.
The crafty krauts destroyed all of the evidence including millions of mortal remains, and all that remains of these killing camps at Belzec, Treblinka and Sobibor is one pair of little shoes.
source: Brian Akira
Holocaust or Hoax?: The Arguments by Jürgen Graf, Chapter 12