(AP) KIRYAT MALACHI, Israel - When Israeli archaeologist Yoram Haimi decided to investigate his family's unknown Holocaust history, he turned to the skill he knew best: He began to dig.
After learning that two of his uncles were murdered in the infamous Sobibor death camp, he embarked on a landmark excavation project that is shining new light on the workings of one of the most notorious Nazi killing machines, including pinpointing the location of the gas chambers where hundreds of thousands were killed.
Sobibor, in eastern Poland, marks perhaps the most vivid example of the "Final Solution," the Nazi plot to wipe out European Jewry. Unlike other camps that had at least a facade of being prison or labor camps, Sobibor and the neighboring camps Belzec and Treblinka were designed specifically for exterminating Jews. Victims were transported there in cattle cars and gassed to death almost immediately.
But researching Sobibor has been difficult. After an October 1943 uprising at the camp, the Nazis shut it down and leveled it to the ground, replanting over it to cover their tracks.
Today, tall trees cover most of the former camp grounds. Because there were so few survivors -- only 64 were known -- there has never been an authentic layout of the camp, where the Nazis are believed to have murdered some 250,000 Jews over an 18-month period. From those few survivors' memories and partial German documentation, researchers had only limited understanding of how the camp operated.
"I feel like I am an investigator in a criminal forensic laboratory," Haimi, 51, said near his home in southern Israel this week, a day before departing for another dig in Poland. "After all, it is a murder scene."