A third structure was discovered inside the massive pyramid of Kukulkan at Mayan site, researchers say.
Using electrical imaging techniques archeologists tried to find that pyramid last year. Experts claim they had detected an even smaller structure inside the outer two layers.
With help of modern technology they found 10 m tall pyramid-like structure within the 20-m tall ‘intermediate’ pyramid that was covered over by the last construction stage, perhaps around 900 A.D. Detailed scanning results suggest it may have been built in three phases.
The Mayan civilisation occupied Central America and had its peak around the 6th Century AD.
The recently-discovered smallest pyramid was constructed between the years 550-800, researchers say.
The middle structure was discovered in the 1930s and is estimated to date back to the years 800-1000, while the largest one is believed to have been finished between 1050-1300.
“It’s like a Russian nesting doll. Under the large one we get another and another,” researcher Rene Chavez Seguro told a news conference.
Experts are not sure why pyramids were built within each other, there could be various reasons for that, including deterioration of the structure or the arrival of new leadership.They say the smallest pyramid was discovered using 3D Electrical Tomography, a non-invasive technique that measures the electrical signal caused by small injected currents to form a representation of the pyramid’s interior without causing damage.
The discovery could provide new insights into the original Mayan culture before it intermingled with populations from central Mexico.