The Great Pyramid has three known main chambers.
They are the Subterranean Chamber, the Queen’s Chamber and the King’s Chamber. The lowest chamber was cut into the bedrock beneath the pyramid and left unfinished. The Queen’s Chamber lies within the pyramid’s core, while the higher King’s Chamber is faced with granite and contains the pyramid’s granite sarcophagus.
These rooms are connected by a sophisticated system of passages. The Descending Passage leads toward the underground chamber, while the Ascending Passage and Grand Gallery provide access to the upper chambers. The names “Queen’s Chamber” and “King’s Chamber” are modern labels; they do not prove who was actually buried in each space.
Readers sometimes count the five relieving chambers above the King’s Chamber as additional main chambers. They are separate structural compartments designed to reduce pressure on the burial chamber’s roof, so standard descriptions distinguish them from the pyramid’s three principal chambers.