A secret passageway has been discovered under a 1,000-year-old Mexican pyramid.

It’s believed the previously undiscovered access could reveal the geography of the sacred site, as well as shed light on new details of the Mayans ancient beliefs.

Fifteen dead after stampede at market in MoroccoSpanish explorers discovered the ancient Kukulkan pyramid in the 1500s.

The Kukulkan is a Mayan snake god, who legend has it, resembles a feathered serpent and emerged from a cave after an earthquake.

The new discovery of the underground passage is believed to lead to a cenote or water-filled cave at the Temple of Kikulkan in Mexico’s Chichen Itza.

Experts believe this passageway will reveal more about the Mayan ‘snake god’.