Is there evidence of holes in the Auschwitz gas chambers?

Were there holes in the gas chamber roofs at Auschwitz-Birkenau for pouring in Zyklon-B? Photographs and eyewitness testimony, from both perpetrators and survivors, document the existence of holes in the gas chamber roofs. A rigorous forensic study in 2000 has located and proved beyond doubt that they existed. read more

Zyklon-B was supposedly poured into the gas chambers at Auschwitz-Birkenau through holes in the roofs. No holes have ever been found in the gas chamber roofs. If there were no holes in the roofs, then the rooms were not gas chambers and Auschwitz-Birkenau was not an extermination camp. “No holes, no Holocaust!” said David Irving. read more

In gas chamber 2, there is a Zyklon-B induction hole in the ceiling, but no Zyklon-B traces or blue stains; in gas chamber 3 there is heavy floor-to-ceiling Zyklon-B traces and stains, but no induction holes, or signs of holes having ever been there. read more