A pyramid in Morelos (around 40 miles south of Mexico City,) was damaged by the quake. While assessing how much the quake had messed the ancient structure up, Archaeologists discovered that, underneath the pyramid, there was an even older temple that they hadn’t known was there.
From The BBC:
The temple is nestled inside the Teopanzolco pyramid in Morelos state, 70km (43 miles) south of Mexico City.
It is thought to date back to 1150 and to belong to the Tlahuica culture, one of the Aztec peoples living in central Mexico.
The structure is dedicated to Tláloc, the Aztec rain god.
Archaeologists say it would have measured 6m by 4m (20ft by 13ft). Among the temple’s remains they also found an incense burner and ceramic shards.