Worse than the world ever imagined: true scale of the Holocaust
'We knew before how horrible life in the camps and ghettos was but the numbers are unbelievable.'
The figure includes 30,000 slave labour camps and 980 concentration camps. As well as 'killing centres' they included forced labour camps where prisoners made supplies for the war. They also included sites called 'care' centres in which pregnant women were made to have abortions or their babies murdered shortly after birth.
The researchers have created a series of maps which present a grim view of life in wartime Europe.They show just how widespread the camps were, although most were centred in Germany and Poland.
Previous data has shown just the existence of individual camps on a fragmented basis. But using data from 400 contributors , they have now documented the large scale operation for the first time.They have discovered exactly where they are located and how they were run.
It is now believed that the research could help survivors with their claims over unpaid insurance policies. Researchers say the project has helped change the understanding about Holocaust experts over how the camps were run. The Warsaw Ghetto has been identified as the biggest site - holding about 500,000 people at one point.
When the project first started, the researchers expected to find about 7,000 Nazi camps and ghettos. But as the project has gone on, the numbers constantly increased to the current figure of 42,500.
By Anthony Bond