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 ...

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 ...

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 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 ...

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… ...

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 pyramid represents the heart of Teotihuacan, its central landmark. A tunnel leading directly underneath the Pyramid of the Feathered Serpent must have some significance.

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.

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 ...

Millions visit the world’s most iconic landmarks every year, snapping pictures and exploring guided routes. Yet, what the average visitor sees is often just the surface. Deep within these monuments ...