In the ancient Mayan ruins of Chichen Itza sits a pyramid called Kukulcan, also known as El Castillo. Archaeologists have long known that this mysterious structure hides a second pyramid within its walls, but new technology has unearthed something strange: a third pyramid inside the second. El Castillo is a pyramid within a pyramid within a pyramid. If researchers can reach it, it could tell them important things about the early people who built it.
ERT-3D to See How the Past May Be
Pyramids All the Way Down
Smaller Pyramid Found Inside Ancient Mayan Temple
Written by Curiosity Staff June 9, 2017
Wake up with the smartest email in your inbox.
Our Best Articles Daily