In 1981, attempts to map the entirety of the complex led to the aforementioned conclusion of the total area being unknown.[1] In addition to the tunnels that led to other points of the capital's centre, a crypt that possibly worked as an ammo depot (although another hypothesis links it to the Desamparados Church [es], built by ViceroyPedro Antonio Fernández de Castro, 10th Count of Lemos) was also found.[1] According to experts commissioned by the Peruvian State, the tunnels' likely purpose was protection against piracy of the area's locals and safekeeping of valuables.[1]
The San Francisco complex, which includes the catacombs, is one of the most important heritage monuments in the historic centre of Lima, which was declared on December 9, 1988, as a World Heritage Site by UNESCO.[7]
^Richter F-Prada, Federico (1988). "Acta de traslación del cadáver del venerable P. Ramón Tagle y Bracho a la cripta de los venerables del Convento de San Francisco de Jesús de Lima" [Act of transfer of the corpse of the venerable Fr. Ramón Tagle y Bracho to the crypt of the venerables of the Convent of San Francisco de Jesús de Lima]. V. Fray Ramón Tagle y Bracho. Franciscano Limeño (in Spanish). Talleres Gráficos P. L. Villanueva.