Patio 29
Patio 29 (Spanish: Yard 29) is a common grave site 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.