Kazimierz Skarżyński was a Pole living in the village of Wólka Okrąglik near the Treblinka Camp who testified twice in front of a Soviet investigative commission about the Treblinka Camp, once on 22 August 1944, and then again one day later.
In his first deposition, he claimed to know from Jews incarcerated at Treblinka that Jews were killed “in hermetically sealed chambers […] by pumping out the air.” However, creating a vacuum in a brick-and-mortar building is technically impossible (the external pressure would crush the walls), hence most certainly was not done.
In his second deposition, evidently cajoled by the Soviet investigators, he removed the reference to vacuum chambers and merely stated that Jews were killed “in a special chamber.” This resembles the testimonies of Abe Kon. (See Mattogno 2021e, pp. 137f.)