Archaeologists say damage to a pre-Hispanic pyramid in central Mexico from the September 19 quake has revealed an older structure that was covered by later building.
Works take place at the substructure inside the Teopanzolco pyramid in Cuernavaca, Morelos State, Mexico, on July 11.
Archaeologists believe the temple was built between 1150 and 1200 and was dedicated to the Aztec rain god Tlaloc.
She also said the find indicates that the site built by the Tlahuica people dates back to the early stages of the Mexica period, which makes it older than previously thought.
A ceramic remains and an incense burner belonging to the culture were also found.
INAH Morelos director Isabel Campos Goenaga explained that the discovery of the substructure was made while carrying out exploratory drilling of the pyramid to determine its structural integrity after it was damaged in the September 19 quake.
After an natural disaster took place on September 19, 2017, the pyramid was damaged and a substructure inside was revealed.
An archaeologist from the INAH Morelos Centre said it was common for pre-Hispanic cultures to build one temple over another.
Research suggests that the Tlahuica lived in dozens of small city-states in the area of modern-day Morelos state.
She added: "The floor of both shrines sank and bent, which also put their stability in danger". "It is possible that on the right side are the remains of another temple dedicated to Huitzilopochtli", Koniecza said.
"There was no news, until now, of the existence of a substructure within the pyramidal structure", said INAH Director Isabel Campos Goenaga at a press conference.
In addition, they claim that the structures built at Teopanzolco served as a source of inspiration for the inhabitants of Tenochtitlán, the Aztec capital that became Mexico City.
More than 200 people were killed in Mexico City and many people were trapped under rubble when buildings were toppled.