A skull is measured and marked by forensic anthropologist Selket Callejas in Ossuary 2 at La Verbena Cemetery during an opening ceremony for exhumations by the Guatemalan Forensic Anthropology Foundation (FAFG). The work comprises the most complex and ambitious project in the search for the 45,000 detained-disappeared victims of Guatemala's state-induced terrorism against its citizens primarily during the 1970s and 80s.