Archaeologists discover mysterious void deep within Great Pyramid of Giza

Muon-detecting sensors have revealed a huge cavity hidden within the pyramid - the first major structural find since the 19th century

Archaeologists have uncovered a mysterious enclosure hidden deep inside the Great Pyramid of Giza, the oldest of the seven wonders of the ancient world.

The massive cavity stretches for at least 30 metres and lies above the grand gallery, an impressive ascending corridor that connects the Queen's chamber to the King's in the heart of the historic monument. It is the first major structure found in the pyramid since the 19th century.