Pyramid of the Moon: Secret Tunnel and Chamber Discovered in Teotihuacán City Could Be Passage to Underworld. Published Oct 29, 2018 at 10:01 AM EDT Updated Oct 30, 2018 at 3:26 PM EDT.

Archaeologists in Mexico have discovered a mysterious tunnel and chamber beneath the Pyramid of the Moon in the ancient city of Teotihuacán. Researchers from Mexico’s National Institute of ...

A Secret Tunnel Found in Mexico May Finally Solve the Mysteries of Teotihuacán. The chance discovery beneath a nearly 2,000-year-old pyramid leads to the heart of a lost civilization ...

The researchers discovered a tunnel at a depth of 26 feet, that starting from the center of the avenue runs to a 49 feet in diameter large cavity hidden beneath the Pyramid of the Moon.

When the tunnel under the Pyramid of the Sun was discovered in the 1970s, archaeologists were disappointed to learn that it had been looted, likely by the Mexica (the indigenous people in the ...

Secret chambers dedicated to a mysterious underworld have been uncovered in an ancient pyramid. Researchers have revealed that they discovered a new tunnel and a cavity hidden below an archaeologic… ...

Concealed for decades, a huge network of chambers beneath Rome’s Capitoline Hill is to be opened up to the public, revealing ...

The Great Pyramids of Giza are one of the most iconic images in the world, but 19 miles south of modern-day Cairo lies the Saqqara plateau, Egypt’s oldest pyramid complex. Follow NBC News Chief ...

The pyramid's construction began in 2589 B.C., shortly after the 20-year-old Pharaoh Cheops ascended to the throne. ... Inside the Pharoah's Secret Tunnels, ...

The Great Pyramid of Giza could be about to give up a secret it has been hiding for more than 4,000 years. Experts think they’re on the verge of solving a mystery about this awe-inspiring wonder ...

The gabled ceiling of the secret tunnel suggests it was built to lighten the load on the structure, Mostafa Waziri, head of Egypt’s Supreme Council of Antiquities told reporters at the pyramid site.