In the heart of Mexico, the ancient city of Teotihuacan houses an extensive labyrinth of tunnels beneath the Pyramid of the Sun. Discovered only in the 1970s, this intricate network of tunnels extends to over 5 kilometers, with rooms branching off in various directions. These chambers are believed to have been used for rituals and ceremonies, with artifacts such as sculptures, pottery, and even human remains unearthed during excavations. The tunnels of Teotihuacan offer a unique insight into the spiritual and cultural life of this ancient civilization. In 2008, another remarkable discovery was made in Mexico that further underscored the importance of the underground in Mesoamerican cosmology and architecture. Archaeologists uncovered eleven stone temples inside an underground cave system beneath the Yucatan Peninsula, complete with an underground road which the Mayans believed led to the mythical underworld city known as Xibalba. The underworld was a crucial part of the Mayan spirit