epa03845150 A picture made available 31 August 2013 shows University of South Florida Professor of Anthropology Dr. Erin Kimmerle walks the grounds of the Boot Hill Cemetery at the Arthur G. Dozier School for Boys in Marianna, Florida, USA on 30 August 2013. A team of anthropologists from the University of South Florida preparared to exhume suspected graves at the closed reform school. Thirty one metal crosses mark a cemetery on the property, but ground penetrating radar shows 19 possible burial sites that are unmarked. The school closed in 2011 after years of allegations of beatings, torture, sexual abuse and killings that reportedly took place in the 1940s, 1950s and 1960s. EPA/EDMUND D. FOUNTAIN / POOL