Archaeologists have made an incredible discovery beneath an ancient Mexican Pyramid, a secret tunnel that they believe represents the underworld.
The tunnel was found under the Pyramid of the Moon in the ancient city of Teotihuacán, northeast of Mexico City, The National Geographic reports.
Those who found the tunnel believe that the 33 feet (10 meters) deep tunnel may represent the underworld in the belief system of a bygone pre-Colombian civilisation who supposedly built the pyramid 2,000 years ago.
The tunnel extends from the central square known as the Plaza de la Luna to the nearby pyramid. and the archaeologists who discovered it believe it mirrors other Teotihuacan monuments.
Similar tunnels have been found across Teotihuacan recently, including one that was found under the Temple of the Plumed Serpent.
No one’s been able to get inside the tunnel yet as it was discovered using electrical resistivity tomography a method which creates subterranean images using a electrical resistivity measurements.
The tunnel was discovered by archaeologists from Mexico’s National Institute of Anthropology and History who were mapping the area as part of their conservation efforts for the Plaza de la Luna.
Researchers believe that the Pyramid of the Moon was likely used for rituals including human sacrifice, based on studies of human remains found at burial sites.
It’s currently unknown what the tunnel was used for and further research is planned to work out what its purpose was.