The story was
The whole world reacted with dismay when after the liberation in 1945 the stories of the German extermination camps surfaced. Historians and laymen are still trying to find out who exactly knew what.
Millions of people were killed in outright murder factories. Children, adults and the elderly were pushed naked into the gas chambers, poisoned and finally cremated in super-efficient ovens.
Auschwitz in Poland became the symbol of destruction. We know what happened from the survivors, German soldiers, documents and from the Soviets who relieved the camp in January 1945. Yet people later doubted about the existence of the camps and about the real extent of the crimes.
Archaeologists say now
Archaeologists have refuted claims by Auschwitz deniers. The most persistent - that the poison Zyklon B was not used in the camp - was investigated by analyzing wall samples from the gas chambers.
According to deniers, bluish acid (the active substance in Zyklon B) would have left blue traces on the walls, but chemical analyzes negate this. The gas was in the gas chamber for 30 minutes at most: too little to form deposits. In addition, the walls were cleaned of blood, urine and stools after each destruction.
Deniers also dispute that the poison gas was poured through the roof of the gas chambers, even though several SS men explained the procedure. Archaeological research confirms the existence of the holes in the concrete roof, surrounded by reinforced iron. And they can also be seen on photos from 1943 and 1944.
Hitler's death camps are still being investigated. Recently the archaeologists found with radar mass graves from camp Treblinka in Poland, with thousands of bodies.