The Great Pyramid at Giza has been studied for centuries, yet new scans of the 4,500-year-old monument suggest it may still be hiding a concealed passageway that functions like a secret doorway. Fresh ...

A secret doorway inside an ancient Egyptian pyramid is believed to have been discovered by a scientist, over 4,500 years on from when it was originally built. The Pyramid of Menkaure, the smallest of ...

To protect them against enemies and intruders after death, Egypt’s pharaohs were entombed with their treasures in cleverly concealed chambers deep with in their monumental pyramids. Most of these ...

Researchers explore a tunnel in Teotihuacan last accessed 1,800 years ago. April 28, 2013— -- Mexican archeologists discovered three previously unknown chambers under a pyramid in Teotihuacan, an ...