Discovery of once-hidden corridor inside Great Pyramid of Giza could reveal more findings

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The discovery of a once-hidden, sealed-off corridor inside of one of Egypt's Pyramids of Giza was revealed to the public on Thursday, a development that could spark future findings inside one of the ancient Seven Wonders of the World.

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.

The Pyramid of Khufu, also called the Great Pyramid of Giza, is named for its builder, a 4th Dynasty pharaoh. The pyramid, which is located about 11 miles from Cairo's center, is the largest of three pyramids in the Giza complex. It was completed around 2560 BCE, according to Encyclopaedia Britannica.