Second secret pyramid found inside ancient Mayan temple

‘Archaeologists have found a previously-undiscovered pyramid hidden inside Mexico’s ancient Mayan temple of Kukulkan.
The giant Chichen Itza temple dates back to the 9th century but historians believe the second 10-meter tall structure, hidden within, is part of an earlier Mayan tribute to the gods.
Archaeologists from the National Autonomous University of Mexico (NAUM) and the National Institute of Anthropology and History discovered the inner substructure using a tomographic x-ray technique to penetrate below layers of the stone without incurring any damage.’
Read more: Second secret pyramid found inside ancient Mayan temple