Patio 29 is a common grave in Santiago General Cemetery in Chile, where political prisoners, especially those who "disappeared" during the 1973 Chilean coup d'état, were buried anonymously. The mass grave, the largest of Augusto Pinochet's military government, was used for unannounced and unmarked burials in the 1970s until an anonymous tip alerted the public to its usage. With the return of democracy to Chile in 1990, an exhumation effort through 2006 recovered 126 bodies in 105 graves and identified three-quarters of the victims.