Concentration Camps - People mostly associate the term with Nazi Germany but historians say - it's true - they also existed in America.
During the Civil War authorities in Natchez, Mississippi forced tens of thousands of freed slaves into camps built in what's known as "The Devil's Punchbowl", local historians said.
Estes said that history research is his life. During his studies he said he learned that Union troops ordered re-captured black men to perform hard labor. Women and children were all but left to die in the three "punchbowls".
"When the slaves were released from the plantations during the occupation they overran Natchez. And the population went from about 10,000 to 120,000 overnight," Westbrook said. Her research included searching through Adams County Sheriff's reports from th
"And even to this day they talk about wild peach trees that come up down there but no one in Natchez will eat 'em because they know what the fertilizer was," Westbrook said.