Differents cronists have copied dates and proofs sufficiently plausible as to delve into the issue of the underground tunnels or incas chinkanas, and there is a theory that suggest that there are one of them that connected with Koricancha in Cusco.
Although there is no sufficient documentation to begin a serious study, has not been underestimated this topic. But what is behind this fascinating mystery that dazzles and sundry.
This research again takes importance in 2003, when the press of many countries of the world made echoed behind the discovery of a great underground tunnel of two kilometers long into the cusquenian subsoil. The discovery was conducted by the Spanish archaeologist Anselm Pi Rambla who claims that the tunnel connects to Sacsayhuaman with the Qoricancha (present church of Santo Domingo).
In addition Anselm Pi Rambla said the tunnel that was discovered was a small part of a large network of tunnels, chambers and mausoleums certainly spread under the Cusco city. As well seemed to indicate all results achieved with modern, sophisticated radar equipment, pointing among other points, different tunnels, communicating the current Convento de Santo Domingo to the Convent of Santa Catalina or Marcahuasi, with the Cathedral or Temple of Viracocha Inca, with the Palace of Huascar, with the Temple of Manco Capac or Colcampata and the Huamanmarca. These galleries are around 100 meters deep under the imperial city.