The corridor, which measures nearly 30 feet long and over 6 feet wide, is located in the 4,500-year-old Pyramid of Khufu's north side, near its main entrance, Egyptian authorities said.

Researchers look inside a hidden corridor in the Great Pyramid of Giza for the first time in 4,500 years. ... at least 16 feet long behind what is called the “chevron zone” of the pyramid.

The Pyramid of Khufu — named after its builder, a Fourth Dynasty pharaoh who reigned from 2509 to 2483 B.C. — is one of three pyramids that make up the Great Pyramids at Giza complex.

Located above the main entrance of the pyramid, it measures nearly 30 feet in length and is over six feet wide. The Great Pyramid of Giza was constructed as a monumental tomb during the reign of ...

The corridor is about 9 meters long (29.5 feet), with a transverse section of 2×2 meters (6.5×6.5 feet), and most likely slopes upward, although where it leads remains a mystery.

An image from the ScanPyramids project shows the inside of a hidden corridor about 30 feet long in the Great Pyramid of Giza built for King Khufu, about 4,500 years ago.

Egypt’s antiquities authorities on Thursday unveiled a newly discovered, sealed-off chamber inside one of the Great Pyramids at Giza, just outside of Cairo, that dates back some 4,500 years ago.