Archaeologist reveals evidence of mass graves at Nazi death campAlmost 70 years after the end of the Second World War a groundbreaking forensic archaeological study by the University of Birmingham has unearthed evidence of hidden burial sites at a former death camp where more than 800,000 Jews perished during the Holocaust. It was widely believed that evidence of the extermination camp at Treblinka, in north-east Poland, was destroyed by the Nazis upon its abandonment in August 1943, however, these new findings suggest otherwise, revealing the location of deep pits - potential graves - and structural remains that witness accounts locate as gas chambers.